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1. Global GIS : Bailey equal-area grid
2003. This dataset is a polyline coverage representing the Bailey Equal-Area Grid. The Bailey Equal-Area Grid is an area-reference grid that uses meridia... American Geological Association.
2. Global GIS : Aqueducts, canals, flumes, penstocks
1997. This datalayer is a polyline coverage representing major roads worldwide and was published as part of the USGS Global GIS : global coverage databas... American Geological Institute.
3. Global GIS : Global 5-degree latitude/longitude grid lines (including geographically significant lines)
2003. This dataset is a polyline coverage representing a 5-degree by 5-degree global latitude and longitude grid, including geographically significant li... American Geological Institute.
4. DCW Cultural Landmarks, Lines
1992. This datalayer is a polyline coverage representing cultural landmarks located throughout DCW (Digital Chart of the World) geographic coverage as of... National Imagery and Mapping Agency.
5. DCW Data Quality, Lines
1992. This datalayer is a polyline coverage representing data quality features throughout DCW (Digital Chart of the World) geographic coverage as of 1992... National Imagery and Mapping Agency.
6. DCW Hypsography, Lines
1992. This datalayer is a line coverage representing hypsographic (contour line) features located throughout DCW (Digital Chart of the World) geographic ... National Imagery and Mapping Agency.
7. DCW Hypsography Lines, Supplemental
1992. This datalayer is a polyline coverage representing hypsographic features (contour lines) located throughout DCW (Digital Chart of the World) geogra... National Imagery and Mapping Agency.
8. DCW Ocean Features, Lines
1992. This datalayer is a polyline coverage representing ocean features such as reefs and maritime area limits, along with other miscellaneous features l... National Imagery and Mapping Agency.
9. DCW Physiographic Features, Lines
1992. 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.
10. DCW Railroads, Lines
1992. This datalayer is a polyline coverage representing railroad features found throughout DCW (Digital Chart of the World) geographic coverage as of 19... National Imagery and Mapping Agency.
11. DCW Roads, Lines
1992. 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.
12. DCW Transportation Structures, Lines
1992. 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.
13. DCW Utility Features, Lines
1992. This datalayer is a polyline coverage representing various utility features found throughout DCW (Digital Chart of the World) geographic coverage a... National Imagery and Mapping Agency.
14. VMap1 Aqueducts, Lines
1995. This datalayer is a polyline coverage representing aqueducts and canals located throughout current Vmap geographic coverage areas. Objects in this ...
15. VMap1 Bluffs and Cliffs, Lines
1995. This datalayer is a polyline coverage representing physiographic features such as bluffs or cliffs located throughout current Vmap1 geographic cove...
16. VMap1 Boundary Barriers, Lines
1995. This datalayer is a polyline coverage representing barriers such as as walls and fences, located throughout current Vmap geographic coverage areas....
17. VMap1 Bridges, Lines
1995. This datalayer is a polyline coverage representing bridges, overpasses or viaducts located throughout current Vmap geographic coverage areas. Objec...
18. VMap1 Coastlines
1995. This datalayer is a polyline coverage representing coastlines (shorelines) located throughout current VMap1 geographic coverage areas. Features in ...
19. VMap1 Contour Lines
1995. This datalayer is a polyline coverage representing contour lines located throughout current VMap1 geographic coverage areas. This layer was derived...
20. VMap1 Dams, Lines
1995. This datalayer is a polyline coverage representing dams and weirs located throughout current VMap1 geographic coverage areas. Features in this laye...
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