State of California Department of Public Works Division of Engineering and Irrigation : Bulletin
California State Printing Office
California State Printing Office 1923 State of California Department of Public Works Division of Engineering and Irrigation : Bulletin no. 6
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California State Printing Office 1923 State of California Department of Public Works Division of Engineering and Irrigation : Bulletin no. 5
California State Printing Office 1923 State of California Department of Public Works Division of Engineering and Irrigation : Bulletin no. 4