TY - JOUR AU - Martin, Philip L. TI - The race in the fields: Imports, machines and migrants JF - California Agriculture JO - Calif Agr Y1 - 2017/12/21 VL - 72 IS - 2 SP - 100 EP - 101 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://dx.doi.org/10.3733/ca.2017a0050 L3 - 10.3733/ca.2017a0050 AB -