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Publisher
- U.S. Bureau of the Census5
- LeadDog Consulting (Firm)3
- Environmental Systems Research Institute (Redlands, Calif.)2
- [Washington, D.C.] : Office of Strategic Services, Branch of Research and Analysis, 1943.2
- California. Department of Transportation1
- EEnvironmental Systems Research Institute (Redlands, Calif.)1
- Tele Atlas North America, Inc.1
- United States. Bureau of Transportation Statistics1
- [Washington, D.C.] : Office of Strategic Services, Branch of Research and Analysis, 1944.1