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1983. 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 Operational Navigation Chart (ONC) 1:1,000,000 map series sheet ... Harvard Map Collection, Harvard College Library.
1983. 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 Operational Navigation Chart (ONC) 1:1,000,000 map series sheet ... Harvard Map Collection, Harvard College Library.

14. Arctic Ice Chart, April 18, 1983

Polygon Stanford University Public content
1983. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 18, 1983. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

15. Arctic Ice Chart, April 24, 1983

Polygon Stanford University Public content
1983. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 24, 1983. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

16. Arctic Ice Chart, April 4, 1983

Polygon Stanford University Public content
1983. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 4, 1983. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

17. Arctic Ice Chart, April 9, 1983

Polygon Stanford University Public content
1983. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 9, 1983. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

18. Arctic Ice Chart, August 1, 1983

Polygon Stanford University Public content
1983. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 1, 1983. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

19. Arctic Ice Chart, August 14, 1983

Polygon Stanford University Public content
1983. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 14, 1983. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

20. Arctic Ice Chart, August 20, 1983

Polygon Stanford University Public content
1983. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 20, 1983. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).