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Start Over Author Geological Survey (U.S.) Year 2000 Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. County Boundaries of the United States, 2000

Datasets Stanford University Public content
2000. Geological Survey (U.S.). This polygon shapefile portrays the 2000 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).

2. Global GIS : geologic provinces of the world

Datasets Harvard University Public content
2000. American Geological Institute, Geological Survey (U.S.), and Environmental Systems Research Institute (Redlands, Calif.). This shapefile includes arcs and polygons that describe U.S. Geological Survey defined geologic provinces of the World. Each province has a set of ... American Geological Institute.