"Summary of Operations, California Oil Fields," March 1925 (Vol. 10, No. 9), 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 fdevelopments in drilling tools and refinery statistics. At the rear is a list of maps and publications available from the bureau. There are some plates and tables as illustrations. With the wrappers detached 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
