Columbia subject headings:
Harvard subject headings:
Agricultural laborers--Labor unions--Mexico--Baja California (State)
Agriculture, Cooperative--Mexico--Baja California (State)
Confederación Nacional Campesina (Mexico)
Cárdenas, Lázaro, 1895-1970.
Land reform--Mexico--Baja California (State)
Princeton subject headings:
Agricultural laborers--Labor unions--Mexico--Baja California (State).
Agriculture, Cooperative--Mexico--Baja California (State).
Cárdenas, Lázaro, 1895-1970.
Confederación Nacional Campesina (Mexico)
Land reform--Mexico--Baja California (State).