1. The Effects of Coal and Natural Gas in Pennsylvania
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Start Over You searched for: Keyword Marcellus Shale Remove constraint Keyword: Marcellus Shale Keyword environment Remove constraint Keyword: environment Keyword environment Remove constraint Keyword: environment Keyword Marcellus Shale Remove constraint Keyword: Marcellus Shale Keyword coal Remove constraint Keyword: coal Keyword hydraulic fracturing Remove constraint Keyword: hydraulic fracturing Author Last Name Miller Remove constraint Author Last Name: Miller