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Kelso, Nathaniel Vaughn
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United States
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2012
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1. U.S. State Boundaries, 1:110 million (2012)
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts all countries having 10m admin-1 with scale ranks 1 or less. States depicted include internal, first-order administr... North American Cartographic Information Society.