| 1 |
no. 2
Mines and mineral resources of Calaveras County, California / by William B. Clark and Philip A. Lydon
San Francisco, Calif. : California Division of Mines and Geology , 1962
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| 2 |
3
Geology and mineral resources of San Diego County, California / by F. Harold Wever Jr.
San Francisco, Calif. : California Division of Mines and Geology , 1963
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| 3 |
4
Mines and mineral resources of Trinity County California / by J. C. O'brien
San Francisco, Calif. : California Division of Mines and Geology , 1965
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| 4 |
5
Mines and mineral resources of Monterey County California / by Eeal W. Hart
[San Francisco, Calif.] : California Division of Mines and Geology , 1966
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