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2. 106th Congressional District Boundaries

Polygon Harvard University Public content
1999. Bureau of Transportation Statistics, (comp.). The 106th Congressional District Boundaries data set contains geographic information for the political entities of the Congressional districts of t... Bureau of Transportation Statistics.

4. 90-Meter Bathymetric Grid, New England, 1999

Raster Stanford University Public content
1999. National Geophysical Data Center, United States. Department of Commerce, United States. National Oceanic and Atmospheric Administration, and United States. National Environmental Satellite, Data, and Information Service. This raster dataset provides bathymetry information at a resolution of 90 meters for New England- from coastal regions to the edge of the continent... National Geophysical Data Center.

5. Alabama Block Groups

Polygon Harvard University Restricted content
1999. Geographic Data Technology, Inc. (GDT), Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). Alabama Block Groups represents the U.S. Census block groups of Alabama. Environmental Systems Research Institute, Inc. (ESRI).

6. Alabama Major Roads

Line Harvard University Restricted content
1999. Geographic Data Technology, Inc. (GDT), Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). Alabama Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Alabama. Environmental Systems Research Institute, Inc. (ESRI).

7. Alabama Major Roads 2002

Line Princeton University Restricted content
1999. Geographic Data Technology, Inc. (GDT). Alabama Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Alabama. Environmental Systems Research Institute, Inc. (ESRI).

8. Alabama Tracts

Polygon Harvard University Restricted content
1999. Geographic Data Technology, Inc. (GDT), Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). Alabama Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Alabama. Environmental Systems Research Institute, Inc. (ESRI).

9. Alabama ZIP Code Areas

Polygon Harvard University Restricted content
1999. Geographic Data Technology, Inc. (GDT), Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). Alabama ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a ... Environmental Systems Research Institute, Inc. (ESRI).

10. Alaska Block Groups

Polygon Harvard University Restricted content
1999. Geographic Data Technology, Inc. (GDT), Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). Alaska Block Groups represents the U.S. Census block groups of Alaska. Environmental Systems Research Institute, Inc. (ESRI).

11. Alaska Major Roads

Line Harvard University Restricted content
1999. Geographic Data Technology, Inc. (GDT), Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). Alaska Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Alaska. Environmental Systems Research Institute, Inc. (ESRI).

12. Alaska Major Roads 2002

Line Princeton University Restricted content
1999. Geographic Data Technology, Inc. (GDT). Alaska Major Roads represents interstate, U.S., and state highways and other major thoroughfares within Alaska. Environmental Systems Research Institute, Inc. (ESRI).

13. Alaska Tracts

Polygon Harvard University Restricted content
1999. Geographic Data Technology, Inc. (GDT), Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). Alaska Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Alaska. Environmental Systems Research Institute, Inc. (ESRI).

14. Alaska ZIP Code Areas

Polygon Harvard University Restricted content
1999. Geographic Data Technology, Inc. (GDT), Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). Alaska ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a f... Environmental Systems Research Institute, Inc. (ESRI).

15. Aquin, 1999 (Scanned Map)

Raster Columbia University Restricted content
1999. United States. Defense Mapping Agency and East View Cartographic, Inc. Aquin is a scanned, georeferenced map of the city of Aquin, Haiti at a scale of 1:10,000. Defense Mapping Agency Hydrographic/Topographic Center,.

16. Arctic Ice Chart, April 12, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 12, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

17. Arctic Ice Chart, April 13, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 13, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

18. Arctic Ice Chart, April 14, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 14, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

19. Arctic Ice Chart, April 15, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 15, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

20. Arctic Ice Chart, April 16, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 16, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

21. Arctic Ice Chart, April 19, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 19, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

22. Arctic Ice Chart, April 20, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 20, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

23. Arctic Ice Chart, April 21, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 21, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

24. Arctic Ice Chart, April 22, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 22, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

25. Arctic Ice Chart, April 23, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 23, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

26. Arctic Ice Chart, April 26, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 26, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

27. Arctic Ice Chart, April 27, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 27, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

28. Arctic Ice Chart, April 28, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 28, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

29. Arctic Ice Chart, April 29, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 29, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

30. Arctic Ice Chart, April 30, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 30, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

31. Arctic Ice Chart, April 6, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 6, 1999. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

32. Arctic Ice Chart, April 7, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 7, 1999. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

33. Arctic Ice Chart, April 8, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 8, 1999. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

34. Arctic Ice Chart, April 9, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 9, 1999. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

35. Arctic Ice Chart, August 10, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 10, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

36. Arctic Ice Chart, August 11, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 11, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

37. Arctic Ice Chart, August 12, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 12, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

38. Arctic Ice Chart, August 13, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 13, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

39. Arctic Ice Chart, August 16, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 16, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

40. Arctic Ice Chart, August 17, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 17, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

41. Arctic Ice Chart, August 18, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 18, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

42. Arctic Ice Chart, August 19, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 19, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

43. Arctic Ice Chart, August 2, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 2, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

44. Arctic Ice Chart, August 20, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 20, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

45. Arctic Ice Chart, August 23, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 23, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

46. Arctic Ice Chart, August 24, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 24, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

47. Arctic Ice Chart, August 25, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 25, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

48. Arctic Ice Chart, August 26, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 26, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

49. Arctic Ice Chart, August 27, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 27, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

50. Arctic Ice Chart, August 3, 1999

Polygon Stanford University Public content
1999. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 3, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).