1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a line coverage representing various physiographic features found throughout DCW (Digital Chart of the World) geographic coverage... National Imagery and Mapping Agency.
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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.