2001. This polygon shapefile contains ice observations in the Arctic region for August 29, 2001. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
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2001. This polygon shapefile contains ice observations in the Arctic region for August 30, 2001. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for September 3, 2001. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for September 4, 2001. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for September 5, 2001. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for September 6, 2001. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1943 and 1944. Stanford Geospatial Center. This polygon shapefile is an index to 1:3,000,000 scale maps of Eastern hemisphere (Africa, Asia, and Europe), titled 'Sanbyakumanbunnoichi Ōa Kōkū...
1990. 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).
1997. This polygon shapefile contains ice observations in the Arctic region for May 20, 1997. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1920. Rand McNally and Company. Soils surveyed by E.C. Hall of the U.S. Department of Agriculture and David D. Long of the Georgia State College of Agriculture. 48 x 69 centimeter... Rand McNally & Co (Chicago).