1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polyline coverage representing political boundaries and ocean feature lines found throughout DCW (Digital Chart of the World) g... National Imagery and Mapping Agency.
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1995. National Geospatial-Intelligence Agency. This datalayer is a polygon coverage representing coastal hydrography located throughout current Vmap geographic coverage areas. Features in this l...
1995. National Geospatial-Intelligence Agency. This datalayer is a polyline coverage representing coastlines (shorelines) located throughout current VMap1 geographic coverage areas. Features in ...
2002. National Geospatial Intellience Agency (formerly the U.S. Defense Mapping Agency - DMA). This datalayer is a polyline coverage representing coastlines and international boundaries for every continent including Antarctica at a scale of 1... East View Cartographic.