TY  - RPRT
TI  - Quaternary geology of Alameda County, and parts of Contra Costa, Santa Clara, San Mateo, San Francisco, Stanislaus, and San Joaquin Counties, California: A digital database
AU  - E. J. Helley
AU  - R. W. Graymer
PY  - 1997
DO  - 10.3133/ofr9797
UR  - https://pubs.usgs.gov/publication/ofr9797
ID  - ofr9797
ER  -