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Lua i Stíl Chicago (17ú heag.)California. Division of Highways, California. Division of Traffic Engineering, California. Office of Traffic Engineering, California. Office of Traffic, agus United States. Bureau of Public Roads. Traffic Volumes on the California State Highway System. Sacramento, Calif: The Division, 1968.
Lua MLA (9ú heag.)California. Division of Highways, et al. Traffic Volumes on the California State Highway System. The Division, 1968.
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