TY  - RPRT
TI  - Preliminary geologic map of western Sonoma County and northernmost Marin County, California
AU  - M. C. Blake
AU  - R. H. Wright
AU  - C. M. Wentworth
PY  - 1971
DO  - 10.3133/ofr7144
UR  - https://pubs.usgs.gov/publication/ofr7144
ID  - ofr7144
ER  -