1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polyline coverage representing road features found throughout DCW (Digital Chart of the World) geographic coverage as of 1992. ... National Imagery and Mapping Agency.
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1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polyline coverage representing various transportation structure features found throughout DCW (Digital Chart of the World) geog... National Imagery and Mapping Agency.
1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a point coverage representing various transportation structure features found throughout DCW (Digital Chart of the World) geograp... National Imagery and Mapping Agency.