01333cam a22003131 4500 gs 52000058 DLC 20260227111358.0 730904s1951 cauab b 000 0 eng c gs 52000058 (OCoLC)684927 U.S. Geol. Survey. Libr. VtMiM OCoLC WaChenE DLC n-us-ca TN24.C2 A3 no. 154 557.94 California. Division of Mines. Geologic guidebook of the San Francisco Bay counties; history, landscape, geology, fossils, minerals, industry, and routes to travel. Prepared under the direction of Olaf P. Jenkins. Contributing authors: Charles V. Averill [and others] San Francisco, 1951. 392 p. illus., maps 22 x 27 cm. Its Bulletin, 154 At head of title: State of California Dept. of Natural Resources, Division of Mines. Includes bibliographies. Geology California San Francisco Bay Area. Mines and mineral resources California San Francisco Bay Area. San Francisco Bay Area (Calif.) Description and travel. Jenkins, Olaf Pitt, 1889- Averill, Charles Volney, 1892- Bulletin (California. Division of Mines) ; no. 154. 28616 28616