TY  - RPRT
TI  - Preliminary geologic map of the Briones Valley Quadrangle, Alameda and Contra Costa counties, California
AU  - T. W. Dibblee
PY  - 1980
DO  - 10.3133/ofr80539
UR  - https://pubs.usgs.gov/publication/ofr80539
ID  - ofr80539
ER  -