TY  - RPRT
TI  - Geologic map of Twitchell Dam and parts of Santa Maria and Tepusquet Canyon quadrangles, Santa Barbara County, California
AU  - C.A. Hall
PY  - 1978
DO  - 10.3133/mf933
UR  - https://pubs.usgs.gov/publication/mf933
ID  - mf933
ER  -