2000. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 5, 2000. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
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1998. This polygon shapefile contains ice observations in the Arctic region for April 21, 1998. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1998. This polygon shapefile contains ice observations in the Arctic region for April 22, 1998. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1998. This polygon shapefile contains ice observations in the Arctic region for April 23, 1998. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1998. This polygon shapefile contains ice observations in the Arctic region for April 24, 1998. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
Robert de Vaugondy, Didier, 1723-1786 and Diderot, Denis, 1713-1784. Copper engraved, hand colored, map of Northern Hemisphere with a focus on North America, routes of the explorers, the colonies, cities therein, as ... [Rovert de Vaugondy].
2001. This polygon shapefile contains ice observations in the Arctic region for July 2, 2001. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
L'Isle, Joseph Nicolas de, 1688-1768. Joseph-Nicolas Delisle? Map of northeastern Siberia and northwestern coast of North America. Relief shown pictorially. Latitudinal and longitudinal... publisher not identified,.
2002. This polygon shapefile contains ice observations in the Arctic region for August 13, 2002. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for August 14, 2002. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).