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Summary of Oil and Gas Activity in Ohio During 1960

Warren Lytle CalvertCharles Henry SummersonGeorge R. McCormickH. Gray MulterJohn W. Dow

出版	Ohio Department of Natural Resources, Division of Geological Survey, 1963
URL	http://books.google.com.hk/books?id=Zk1BvUgyOKQC&hl=&source=gbs_api