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1. Global GIS : geologic provinces of the world

Polygon Harvard University Public content
2000. American Geological Institute. This shapefile includes arcs and polygons that describe U.S. Geological Survey defined geologic provinces of the World. Each province has a set o... American Geological Institute.

2. National Rail Network 1:100,000

Polygon Harvard University Public content
2000. Bureau of Transportation Statistics, comp. The Rail Network is a comprehensive database of the nation's railway system including all railway mainlines, railroad yards, and major sidings in t... Bureau of Transportation Statistics.

3. National Rail Network 1:2,000,000

Polygon Harvard University Public content
2000. Bureau of Transportation Statistics, (comp.). The Rail Network is a comprehensive database of the nation's railway system including all railway mainlines, railroad yards, and major sidings in t... Bureau of Transportation Statistics.

5. MassGIS 2000 Areas of Critical Environmental Concern (July 2000)

Polygon Harvard University Public content
2000. MassGIS (Office : Mass.). The Areas of Critical Environmental Concern (ACEC) datalayer shows the location of areas that have been designated ACECs by the Secretary of Enviro... Office of Geographic and Environmental Information (MassGIS).

9. MassGIS 2003 Massachusetts Major Watersheds (Polygons) (June 2000)

Polygon Harvard University Public content
2000. MassGIS (Office : Mass.). This datalayer contains polygons representing Massachusetts watersheds (see also the Watersheds (Arcs) datalayer). MassGIS has produced a statew... Office of Geographic and Environmental Information (MassGIS).

10. MassGIS 2003 Massachusetts Soils (Polygons) (December 2000)

Polygon Harvard University Public content
2000. MassGIS (Office : Mass.). This datalayer contains polygons representing soil survey areas for a portion of the state of Massachusetts (see also Soils (Arcs)). The soils dat... Office of Geographic and Environmental Information (MassGIS).