"Summary of Operations, California Oil Fields," May 1922 (Vol. 7, No. 11), published by the State Oil and Gas Supervisor, California State Mining Bureau. There is much information about the production of wells in the various fields throughout the state, as well as special articles on production and consumption of petroleum, oil and gas separation, and refinery statistics. At the rear is a list of maps and publications available from the bureau. There are some diagrams and fold-out tables as illustrations. With the front wrapper separated and badly worn, but the rest in decent shape, the condition is poor.
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California State Mining Bureau. State Oil and Gas Supervisor