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Author
Geological Survey (U.S.)
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Administrative and political divisions
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Arkansas
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Place
Texas
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Year
1972
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1. State Boundaries of the United States, 2005
1972. Geological Survey (U.S.). This polygon shapefile portrays the state boundaries of the United States, and the boundaries of Puerto Rico and the U.S. Virgin Islands. The map l... Geological Survey (U.S.).