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The state highways of California an engineering study conducted jointly by the California State Automobile Association and the Automobile Club of Southern California, July, 1920-January, 1921
- "The state highways of California; an engineering study conducted jointly by the California State Automobile Association and the Automobile Club of Southern California, July, 1920-January, 1921"
- "The state highways of California an engineering study conducted jointly by the California State Automobile Association and the Automobile Club of Southern California, July, 1920-January, 1921"@en