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2013. United States. Department of State. Office of the Geographer. This polygon shapefile contains the boundaries of countries in South America. This layer, created by the Office of the Geographer, combines two dat... United States. Department of State. Office of the Geographer. Humanitarian Information Unit.
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.
2012. United States. Department of State. Office of the Geographer. This line shapefile contains country boundaries for Africa and American continents. Large Scale International Boundaries (LSIB) are created and mai... United States. Department of State. Humanitarian Information Unit.
2006. World Wildlife Fund. This river network (stream lines) map for South America is derived from the flow direction map for South America. The flow accumulation map for Sou... Geological Survey (U.S.).
2006. World Wildlife Fund. This river network (stream lines) map for South America is derived from the flow direction map for South America. The flow accumulation map for Sou... Geological Survey (U.S.).