TY  - RPRT
TI  - Preliminary geologic map of the Copper Mountain Quadrangle, Stanislaus County, California
AU  - T. W. Dibblee
PY  - 1982
DO  - 10.3133/ofr82393
UR  - https://pubs.usgs.gov/publication/ofr82393
ID  - ofr82393
ER  -