1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing worldwide locations where natural resources are being extracted from the earth and locations wher... American Geological Institute.
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1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide locations where natural resources are being extracted from the earth. It was published as... American Geological Institute.
1999. American Geological Institute, Geological Survey (U.S.), Petroconsultants International Data Corp., and Environmental Systems Research Institute (Redlands, Calif.). This coverage contains points that describe centerpoint locations of and primary commodity produced by oil and gas fields. A fundamental task in th... American Geological Institute.