1. The Effects of Coal and Natural Gas in Pennsylvania
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Start Over You searched for: Year 2012 Remove constraint Year: 2012 Keyword Marcellus Shale Remove constraint Keyword: Marcellus Shale Keyword coal Remove constraint Keyword: coal Keyword environment Remove constraint Keyword: environment Keyword hydraulic fracturing Remove constraint Keyword: hydraulic fracturing Keyword natural gas Remove constraint Keyword: natural gas Author Last Name Miller Remove constraint Author Last Name: Miller