Columbia subject headings:
Harvard subject headings:
Agricultural laborers--Labor unions--California--History.
Agricultural laborers--Labor unions--California.
Chavez, Cesar, 1927-1993
Labor unions--United States--Officials and employees--Biography
Mexican Americans--Biography
United Farm Workers of America--History.
Princeton subject headings:
Agricultural laborers--Labor unions--California--History.
Chavez, Cesar, 1927-1993.
Labor unions--United States--Officials and employees--Biography.
Mexican Americans--Biography.
United Farm Workers of America--History.