TY  - RPRT
TI  - Preliminary geologic map of the Diablo quadrangle, Alameda and Contra Costa counties, California
AU  - T. W. Dibblee
PY  - 1980
DO  - 10.3133/ofr80546
UR  - https://pubs.usgs.gov/publication/ofr80546
ID  - ofr80546
ER  -