1996. Geological Survey (U.S.). The USGS Central Region Energy Team assessed the oil and gas resources of the United States. Cell maps for each oil and gas production area were cr... U.S. Geological Survey, Central Region Energy Team.
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1996. Environmental Systems Research Institute (Redlands, Calif.) and Geological Survey (U.S.). This datalayer is a polyline coverage representing earthquake faults worldwide. It was originally produced by ESRI and the USGS for the Global GIS ... American Geological Institute.