1951. U-Spatial. A sublayer from migration routes for the five largest refugee populations in modern US history. This layer focuses on the five largest refugee orig...
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1990. U-Spatial. Global coal production by country, 1990 to 2013.
1990. U-Spatial. Global natural gas production by country, 1990 - 2014.
1990. U-Spatial. Global natural gas reserves by country, 1990 - 2014.
1990. U-Spatial. Global oil production by country, 1990 - 2014.
1990. U-Spatial. Global oil reserves by country, 1990 - 2014.
1800. U-Spatial. Political national boundaries as they were in the year 1800. Sources: Wilkinson, Robert. (January 1, 1800). Africa including the Mediterranean. ...
1800. U-Spatial. Historical National Boundaries displays global national boundaries for the following dates in history: 1800, 1914, 1918, 1939, 1945, 1970, 1990, 20...
1914. U-Spatial. Political national boundaries as they were in 1914. Sources: The Rand McNally New Library Atlas of North America. (1914). Rand McNally & Company....
1918. U-Spatial. Political national boundaries as they were in 1918. Source: Rand McNally & Company’s New Atlas of the World. (1918). Rand McNally & Company, Chicag...
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