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Author
Kelso, Nathaniel Vaughn
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Format
Shapefile
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Subject
Boundaries
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Subject
Rivers
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Year
2012
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1. U.S. Parks and Protected Land Lines, 1:10 million (2012)
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shapefile depicts 394 authorized Park Service units in the United States only that are over 100,000 acres. The data does not include ... North American Cartographic Information Society.