Includes "Map of California showing major rock units and their significance for oil and gas," "Enlarged map of the Los Angeles basin area," index to oil and gas fields, 1 chart and 2 graphs.
Includes text, indexes, inset of "Map of California, showing major rock units and their significance to exploration for tungsten deposits," 2 diagrams, and 5 graphs.
map and statistical data prepared in cooperation with V.C. Heikes, Statistician in Charge, U.S. Bureau of Mines, Department of Commerce, Custom House, San Francisco.