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11. Alabama Tracts 2002

Polygon Princeton University Restricted content
2002. Geographic Data Technology, Inc. (GDT). Alabama Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Alabama. Environmental Systems Research Institute, Inc. (ESRI).

12. Alaska Block Groups 2002

Polygon Princeton University Restricted content
2002. Geographic Data Technology, Inc. (GDT). Alaska Block Groups represents the U.S. Census block groups of Alaska. Environmental Systems Research Institute, Inc. (ESRI).

13. Alaska Tracts 2002

Polygon Princeton University Restricted content
2002. Geographic Data Technology, Inc. (GDT). Alaska Tracts represents the U.S. Census tracts and block numbering areas (BNA) of Alaska. Environmental Systems Research Institute, Inc. (ESRI).

15. Arctic Ice Chart, April 1, 2002

Polygon Stanford University Public content
2002. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 2002. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

16. Arctic Ice Chart, April 10, 2002

Polygon Stanford University Public content
2002. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 10, 2002. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

17. Arctic Ice Chart, April 11, 2002

Polygon Stanford University Public content
2002. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 11, 2002. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

18. Arctic Ice Chart, April 12, 2002

Polygon Stanford University Public content
2002. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 12, 2002. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

19. Arctic Ice Chart, April 15, 2002

Polygon Stanford University Public content
2002. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 15, 2002. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

20. Arctic Ice Chart, April 16, 2002

Polygon Stanford University Public content
2002. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 16, 2002. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).