TY - JOUR AU - Schlinger, E. I. TI - Aphid pests of field and orchard crops: Biological control JF - California Agriculture JO - Calif Agr Y1 - 1960/01/01 VL - 14 IS - 1 SP - 3 EP - 3 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v014n01p3b AB -