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2. 1:250,000 Scale Land Use and Land Cover, New York, 1990

Polygon Cornell University Public content
1990. U.S. Geological Survey and U.S. Environmental Protection Agency. This is derived from land use/land cover digital data collected by USGS and coverted to ARC/INFO by the EPA. This data is useful for environmental ...

3. 1990 Census Roads - San Francisco Bay Area, California

Line Stanford University Public content
1990. California. Metropolitan Transportation Commission. This line shapefile contains primary and secondary roads for the San Francosco Bay Area in California. Primary roads are generally divided, limited... California. Metropolitan Transportation Commission.

4. 1990 County Boundaries of China with Population Census Data, Part 1

Polygon New York University Restricted content
1990. This polygon shapefile represents the 1990 County Boundaries for China. The layer includes population census data and was primarily based on the "T... Beijing Hua tong ren shi chang xin xi you xian ze ren gong si.

5. 1990 County Boundaries of China with Population Census Data, Part 2

Polygon New York University Restricted content
1990. This polygon shapefile represents the 1990 County Boundaries for China. The layer includes population census data and was primarily based on the "T... Beijing Hua tong ren shi chang xin xi you xian ze ren gong si.

6. 1990 Province Boundaries for China

Polygon New York University Restricted content
1990. This polygon shapefile represents the 1990 Province Boundaries for China. The layer was primarily based on the "The Administrative Maps of the Peop... Beijing Hua tong ren shi chang xin xi you xian ze ren gong si.

7. 1991 Block Boundaries of India

Polygon New York University Restricted content
1991. This layer is a polygon theme representing block boundaries of India for 1991 and includes socio-demographic Census attribute data such as total po... ML InfoMap (Firm).

8. 1991 District Boundaries of India

Polygon New York University Restricted content
1991. This layer is a polygon theme representing district boundaries of India for 1991. Includes district socio-demographic Census attribute data such as... ML InfoMap (Firm).

9. 1991 State Boundaries of India

Polygon New York University Restricted content
1991. This layer is a polygon theme representing state boundaries of India for 1991 and includes socio-demographic Census attribute data such as total po... ML InfoMap (Firm).

10. 1991 Sub District Boundaries of India

Polygon New York University Restricted content
1991. This layer is a polygon theme representing sub district boundaries of India for 1991. Includes district socio-demographic Census attribute data suc... ML InfoMap (Firm).
1990. Alternate cover title: Devastated London : the bombed city as seen from a barrage balloon. Black-and white reduce facsimile of color view made orig... London : London Topographical Society, 1990.

14. Aeromagnetic map of Minnesota, southeastern region, Plate 1

University of Minnesota Public content
1991. Chandler, Val W. Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected... Minnesota Geological Survey.

15. Aeromagnetic map of Minnesota, southeastern region, Plate 2

University of Minnesota Public content
1991. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line... Minnesota Geological Survey.

16. Alabama Block Centroid Populations

Point Harvard University Restricted content
1990. Environmental Systems Research Institute, Inc. (ESRI) and Harvard Geospatial Library. Alabama Block Centroid Populations represents the population of the U.S. Census block centroids for Alabama. U.S. Census blocks are the smallest ge... Environmental Systems Research Institute, Inc. (ESRI).

17. Alaska Block Centroid Populations

Point Harvard University Restricted content
1990. Environmental Systems Research Institute, Inc. (ESRI) and Harvard Geospatial Library. Alaska Block Centroid Populations represents the population of the U.S. Census block centroids for Alaska. U.S. Census blocks are the smallest geog... Environmental Systems Research Institute, Inc. (ESRI).
1991. Aerospace Center (U.S.), United States. National Imagery and Mapping Agency., United States. Defense Mapping Agency., Harvard University. Center for Geographic Analysis., and East View Cartographic, Inc. This layer is a georeferenced raster image of the United States Aerospace Center's Tactical Pilotage Chart (TPC) 1:500,000 map series sheet entitle... Harvard Map Collection, Harvard College Library.

22. Angola, 1990

Image Princeton University Public content
1990. Central Intelligence Agency. This is a map of Angola and its surrounding countries. The map was created by the Central Intelligence Agency. Central Intelligence Agency.
1991. Aerospace Center (U.S.), United States. National Imagery and Mapping Agency., United States. Defense Mapping Agency., Harvard University. Center for Geographic Analysis., and East View Cartographic, Inc. This layer is a georeferenced raster image of the United States Aerospace Center's Tactical Pilotage Chart (TPC) 1:500,000 map series sheet entitle... Harvard Map Collection, Harvard College Library.

24. Anhui Province Placenames, 1990

Point Columbia University Restricted content
1990. CHGIS, Harvard Yenching Institute. Anhui Province Placenames, 1990 is a point theme representing populated places and natural features in Anhui Province, China (circa 1990). CHGIS, Harvard Yenching Institute.

25. Annual Average Precipitation, WI 1961-1990

Polygon University of Wisconsin Public content
1990. U.S. Department of Agriculture – Natural Resources Conservation Service. This data represents average annual precipitation for Wisconsin from 1961 to 1990. [This dataset provides derived average annual precipitation acco...

26. Another Hema road map

Image Princeton University Restricted content
1991. Hema Maps (Firm). Panel title. Relief shown by spot heights. "Printed ... 1991." Includes index and color illustrations. Brisbane : Hema Maps, [1991].

27. Approaches to Puerto de Pasajes (Raster Image)

Raster Stanford University Restricted content
1991. Land Info (Firm) and United States. Defense Mapping Agency. Georeferenced nautical chart. Map no. 37445 This map is part of a collection of scanned and georeferenced nautical charts produced by the National ... Land Info (Firm).

28. Arctic Ice Chart, April 17, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 17, 1990. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

29. Arctic Ice Chart, April 2, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 2, 1990. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

30. Arctic Ice Chart, April 2, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 2, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

31. Arctic Ice Chart, April 22, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 22, 1991. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

32. Arctic Ice Chart, April 23, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 23, 1990. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

33. Arctic Ice Chart, April 29, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 29, 1991. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

34. Arctic Ice Chart, April 30, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 30, 1990. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

35. Arctic Ice Chart, April 8, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 8, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

36. Arctic Ice Chart, August 12, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 12, 1991. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

37. Arctic Ice Chart, August 13, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 13, 1990. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

38. Arctic Ice Chart, August 19, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 19, 1991. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

39. Arctic Ice Chart, August 20, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 20, 1990. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

40. Arctic Ice Chart, August 26, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 26, 1991. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

41. Arctic Ice Chart, August 27, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 27, 1990. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

42. Arctic Ice Chart, August 5, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 5, 1991. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

43. Arctic Ice Chart, August 6, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 6, 1990. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

44. Arctic Ice Chart, December 10, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 10, 1990. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

45. Arctic Ice Chart, December 16, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 16, 1991. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

46. Arctic Ice Chart, December 17, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 17, 1990. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

47. Arctic Ice Chart, December 2, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 2, 1991. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

48. Arctic Ice Chart, December 23, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 23, 1991. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

49. Arctic Ice Chart, December 24, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 24, 1990. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

50. Arctic Ice Chart, December 3, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 3, 1990. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

51. Arctic Ice Chart, December 30, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 30, 1991. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

52. Arctic Ice Chart, December 31, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 31, 1990. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

53. Arctic Ice Chart, December 9, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 9, 1991. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

54. Arctic Ice Chart, February 11, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 11, 1991. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

55. Arctic Ice Chart, February 12, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 12, 1990. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

56. Arctic Ice Chart, February 19, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 19, 1990. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

57. Arctic Ice Chart, February 25, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 25, 1991. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

58. Arctic Ice Chart, February 26, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 26, 1990. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

59. Arctic Ice Chart, February 4, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 4, 1991. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

60. Arctic Ice Chart, February 5, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 5, 1990. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

61. Arctic Ice Chart, January 1, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 1, 1990. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

62. Arctic Ice Chart, January 14, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 14, 1991. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

63. Arctic Ice Chart, January 15, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 15, 1990. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

64. Arctic Ice Chart, January 21, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 21, 1991. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

65. Arctic Ice Chart, January 22, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 22, 1990. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

66. Arctic Ice Chart, January 28, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 28, 1991. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

67. Arctic Ice Chart, January 29, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 29, 1990. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

68. Arctic Ice Chart, January 7, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 7, 1991. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

69. Arctic Ice Chart, January 8, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 8, 1990. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

70. Arctic Ice Chart, July 15, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 15, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

71. Arctic Ice Chart, July 16, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 16, 1990. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

72. Arctic Ice Chart, July 2, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 2, 1990. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

73. Arctic Ice Chart, July 22, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 22, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

74. Arctic Ice Chart, July 23, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 23, 1990. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

75. Arctic Ice Chart, July 29, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 29, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

76. Arctic Ice Chart, July 30, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 30, 1990. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

77. Arctic Ice Chart, July 8, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 8, 1991. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

78. Arctic Ice Chart, July 9, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 9, 1990. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

79. Arctic Ice Chart, June 10, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 10, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

80. Arctic Ice Chart, June 11, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 11, 1990. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

81. Arctic Ice Chart, June 17, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 17, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

82. Arctic Ice Chart, June 18, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 18, 1990. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

83. Arctic Ice Chart, June 24, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 24, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

84. Arctic Ice Chart, June 25, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 25, 1990. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

85. Arctic Ice Chart, June 3, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 3, 1991. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

86. Arctic Ice Chart, June 5, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 5, 1990. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

87. Arctic Ice Chart, March 11, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 11, 1991. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

88. Arctic Ice Chart, March 12, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 12, 1990. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

89. Arctic Ice Chart, March 18, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 18, 1991. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

90. Arctic Ice Chart, March 19, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 19, 1990. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

91. Arctic Ice Chart, March 25, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 25, 1991. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

92. Arctic Ice Chart, March 26, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 26, 1990. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

93. Arctic Ice Chart, March 4, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 4, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

94. Arctic Ice Chart, March 5, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 5, 1990. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

95. Arctic Ice Chart, May 13, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 13, 1991. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

96. Arctic Ice Chart, May 14, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 14, 1990. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

97. Arctic Ice Chart, May 21, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 21, 1990. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

98. Arctic Ice Chart, May 21, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 21, 1991. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

99. Arctic Ice Chart, May 27, 1991

Polygon Stanford University Public content
1991. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 27, 1991. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

100. Arctic Ice Chart, May 28, 1990

Polygon Stanford University Public content
1990. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 28, 1990. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).