TY - JOUR AU - Stephens, Tim TI - San Francisco water district targets cattle JF - California Agriculture JO - Calif Agr Y1 - 1997/03/01 VL - 51 IS - 2 SP - 7 EP - 7 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v051n02p7 AB -