You searched for: Subject Environment Remove constraint Subject: Environment Place United States. Virgin Islands Remove constraint Place: United States. Virgin Islands Place Arkansas Remove constraint Place: Arkansas Place Alaska Remove constraint Place: Alaska Year 1972 Remove constraint Year: 1972
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.