TY  - RPRT
TI  - Preliminary geologic map of the Richmond quadrangle, Alameda and Contra Costa counties, California
AU  - T. W. Dibblee
PY  - 1980
DO  - 10.3133/ofr801100
UR  - https://pubs.usgs.gov/publication/ofr801100
ID  - ofr801100
ER  -