TY - RPRT TI - Preliminary geologic map emphasizing bedrock formations in Alameda County, California: A digital database AU - R. W. Graymer AU - D. L. Jones AU - E. E. Brabb PY - 1996 DO - 10.3133/ofr96252 UR - https://pubs.usgs.gov/publication/ofr96252 ID - ofr96252 ER -