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You searched for: geology Remove constraint geology Genre Geospatial data Remove constraint Genre: Geospatial data Contributor Penn State Remove constraint Contributor: Penn State Time Period 2000-2004 Remove constraint Time Period: 2000-2004
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Bedrock Geology: Pennsylvania penn-state

2001. Pennsylvania Department of Conservation and Natural Resources. Two digital data sets, one for geologic units and faults and the other for dikes, have been prepared for Pennsylvania. The data sets were digitized...

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Ecoregions United States (Omernik) penn-state

2003. U S Environmental Protection Agency. This map layer shows Omernik's Level III ecoregions, derived from a 1:7,500,000 map created by J.M. Omernik in 1987 and from refinements of Omernik...