TY - RPRT TI - Reconnaissance surficial geologic maps of the Fillmore, Moorpark, Piru, and Simi 7.5' quadrangles, Ventura County, southern California AU - Douglas M. Morton PY - 1976 DO - 10.3133/ofr76210 UR - https://pubs.usgs.gov/publication/ofr76210 ID - ofr76210 ER -