Columbia subject headings:
Migrant agricultural laborers--Government policy--International cooperation.
Migrant agricultural laborers--Legal status, laws, etc.
Harvard subject headings:
Agricultural laborers--United States
Migrant agricultural laborers--Government policy--International cooperation.
Migrant agricultural laborers--Legal status, laws, etc.
Migrant agricultural laborers--United States.
Seasonal labor--United States.
Princeton subject headings:
Agricultural laborers--United States.
Migrant agricultural laborers--United States.
Seasonal labor--United States.