TY - RPRT TI - Use of isotopic data to evaluate recharge and geologic controls on the movement of ground water in Las Posas Valley, Ventura County, California AU - John A. Izbicki AU - Peter Martin PY - 1997 DO - 10.3133/wri974035 UR - https://pubs.usgs.gov/publication/wri974035 ID - wri974035 ER -