1984. U.S.G.S. United States. Federal Highway Administration. Department of Transportation United States. Geological Survey North Decimal Degree 71.50000... [Reston, Va.] : U.S. Geological Survey, 1984.
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1984. Oilfield Publications Limited Oilfields and gasfields located; oil and gas pipelines, both existing and proposed, located. Ledbury, England ; Houston, Tex. : Oilfield Publications Limited, 1984.