TY - RPRT TI - Location and age of foraminifer samples examined by Chevron Petroleum Company paleontologists from more than 2,500 oil test wells in California AU - Earl E. Brabb PY - 2011 DO - 10.3133/ofr20111262 UR - https://pubs.usgs.gov/publication/ofr20111262 ID - ofr20111262 ER -