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You searched for: Publisher National Atlas of the United States Remove constraint Publisher: National Atlas of the United States Subject Environment Remove constraint Subject: Environment Place Puerto Rico Remove constraint Place: Puerto Rico Year 1972 Remove constraint Year: 1972
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1. National Wilderness Preservation System of the United States, 2006

1972. National Atlas of the United States. This polygon shapefile contains National Wilderness Preservation System areas of 640 acres or more, in the United States, Puerto Rico, and the U.S.... National Atlas of the United States.