Columbia subject headings:
Agricultural laborers--United States.
Child labor--Law and legislation--United States.
Child labor--United States.
Work environment--United States.
Harvard subject headings:
Agricultural laborers--United States
Child labor--Law and legislation--United States
Child labor--United States
Work environment--United States.
Princeton subject headings:
Agricultural laborers--Legal status, laws, etc.--United States.
Child labor--Law and legislation--United States.
Child migrant agricultural laborers--Legal status, laws, etc.--United States.