TY - JOUR AU - Buchanan, Mark T. TI - …Challenge for the future JF - California Agriculture JO - Calif Agr Y1 - 1971/02/01 VL - 25 IS - 2 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.v025n02p2 AB -