Columbia subject headings:
Migrant agricultural laborers--Argentina--Cuyo.
Migrant agricultural laborers--California--Napa.
Migrant agricultural laborers--Spain.
Viticulture--Argentina--Cuyo.
Viticulture--California--Napa.
Viticulture--Spain.
Harvard subject headings:
Princeton subject headings:
Migrant agricultural laborers--Argentina--Cuyo.
Migrant agricultural laborers--California--Napa.
Migrant agricultural laborers--Spain.
Viticulture--Argentina--Cuyo.
Viticulture--California--Napa.
Viticulture--Spain.