TY - JOUR AU - Warnert, Jeannette E. TI - Asian citrus psyllid and huanglongbing disease threaten California citrus JF - California Agriculture JO - Calif Agr Y1 - 2012/10/01 VL - 66 IS - 4 SP - 127 EP - 130 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v066n04p127 AB -