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2008. United States. Department of State. Office of the Geographer. This polygon shapefile contains the boundaries of countries in Europe and southwest Asia. This layer, created by the Office of the Geographer, comb... United States. Department of State. Office of the Geographer. Humanitarian Information Unit.
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 Yemen compiled from sources in 2008. Heat flow is a measure of heat loss across the surface of the... International Heat Flow Commission.