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Environmental Systems Research Institute (Redlands, Calif.)
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United States. National Park Service
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Environment
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1. United States Major Parks, 1992-1997
1992. United States. National Park Service and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents National Parks, National Forests, State and local parks and forests within the United States at 1:100,000 scale. ... Environmental Systems Research Institute (Redlands, Calif.).