1981. This polygon shapefile contains ice observations in the Arctic region for December 22, 1981. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
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1981. All China Marketing Research Co., Ltd. This polygon dataset represents city boundaries in China from 1981. The attribute table includes the GB codes and names in Chinese and English (Pin... China Data Center, University of Michigan.
1981. All China Marketing Research Co., Ltd. This polygon dataset represents county boundaries in China from 1981. The attribute table includes the GB codes and names in Chinese and English (P... China Data Center, University of Michigan.
1981. All China Marketing Research Co., Ltd. This polygon dataset represents province boundaries in China from 1981. The attribute table includes the GB codes and names in Chinese and English ... China Data Center, University of Michigan.
1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, and 2010. International Heat Flow Commission, International Association of Seismology and Physics of the Earth's Interior, and Oklahoma State University. Department of Geography. Cartography Service. This point shapefile contains heat flow data for Canada compiled from sources dating from 1977 to 2010. Heat flow is a measure of heat loss across ... International Heat Flow Commission.
1981. This polygon shapefile contains ice observations in the Arctic region for April 6, 1981. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for April 2, 1981. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for April 9, 1981. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, and 2008. International Heat Flow Commission, International Association of Seismology and Physics of the Earth's Interior, and Oklahoma State University. Department of Geography. Cartography Service. This point shapefile contains heat flow data for South America compiled from sources dating from 1970 to 2008. Heat flow is a measure of heat loss ... International Heat Flow Commission.
1981. This polygon shapefile contains ice observations in the Arctic region for April 21, 1981. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).