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You searched for: Publisher North American Cartographic Information Society Remove constraint Publisher: North American Cartographic Information Society Subject Parks Remove constraint Subject: Parks Subject Boundaries Remove constraint Subject: Boundaries Subject Trails Remove constraint Subject: Trails
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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.