California Division of Mines and Geo – författare

Bulletin; 87

Bulletin; 85

Geology and Mineral Resources of Santa Ysabel Quadrangle, San Diego County, California

No.177

Geology and Mineral Resources of Santa Ysabel Quadrangle, San Diego County, California

No.177

Mineral Resources of California. [Report of the U.S. Geological Survey in Collaboration With the California Division of Mines and Geology and the U.S. Bureau of Mines

No.191

Geologic Guidebook Along Highway 49, Sierran Gold Belt

The Mother Lode Country

Bulletin Issue No. 46

Bulletin Issue No. 46

California Journal Of Mines And Geology; Volume 8