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- United States. Bureau of the Census. Geography Division20
- Geological Survey (U.S.)15
- Bay Area Open Space Council6
- Environmental Systems Research Institute (Redlands, Calif.)4
- Sacramento County GIS2
- Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique1
- National Atlas of the United States1
- Santa Clara Valley Water District (Calif.)1
- United States. Bureau of Transportation Statistics1