TY - JOUR AU - Lewis, Lowell N. TI - Productivity and production JF - California Agriculture JO - Calif Agr Y1 - 1986/01/01 VL - 40 IS - 1 SP - 2 EP - 2 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v040n01p2 AB -