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You searched for: Genre Geospatial data Remove constraint Genre: Geospatial data Creator Environmental Resources Research Institute Remove constraint Creator: Environmental Resources Research Institute Subject Boundaries Remove constraint Subject: Boundaries Contributor Penn State Remove constraint Contributor: Penn State Place Pennsylvania Remove constraint Place: Pennsylvania Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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1. 104 State Water Plan Watersheds: Pennsylvania

1998. Environmental Resources Research Institute. Digitized boundaries of 104 major watersheds defined in the Pennsylvania state water plan. The State Water Plan, originally developed in the 1970s,...
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2. Landmarks in Pennsylvania

1996. Environmental Resources Research Institute. National Park Service information used to establish landmark boundaries on 1:24,000 USGS topographic maps.
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3. National forests in Pennsylvania

1996. Environmental Resources Research Institute. Boundary information from the office of the Allegheny National Forest, taken from 1:24,000 USGS topographic maps.
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4. National parks in Pennsylvania

1996. Environmental Resources Research Institute. National Park Service list and boundaries from 1:24,000 USGS topographic maps.
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5. National Wildlife Preserves in Pennsylvania

1996. Environmental Resources Research Institute. Boundaries of National Wildlife Preserves in Pennsylvania. Boundaries were provided by the United States Department of the Interior, National Fish ...
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6. Small Watersheds: Pennsylvania

1997. Environmental Resources Research Institute. Boundaries of 9,895 watersheds in Pennsylvania indicated in the Pennsylvania gazetteer of streams. These boundaries enclose catchment areas for nam...