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You searched for: geology Remove constraint geology Place Pennsylvania Remove constraint Place: Pennsylvania Place Chester County, Pennsylvania Remove constraint Place: Chester County, Pennsylvania Time Period 2015-present Remove constraint Time Period: 2015-present

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1. Geology: Montgomery County, Pennsylvania

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2020. U.S. Geological Survey, Southwest Region. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (https://doi.org/10.5066/F7WH2N65) represents a seamless, s...