Columbia subject headings:
Agricultural laborers, Mexican--United States.
Agricultural laborers--United States.
Chihuahua (Chihuahua, Mexico)
Working class--Mexico--Chihuahua (State)
Harvard subject headings:
Agricultural laborers, Mexican--United States.
Labor--Mexico--Chihuahua (State)
Mexican American agricultural laborers.
Working class--Mexico--Chihuahua (State)
Princeton subject headings:
Labor--Mexico--Chihuahua (State).
Mexican American agricultural laborers.