Columbia subject headings:
Harvard subject headings:
Agricultural laborers--India--Kerala--Political activity.
Agricultural laborers--Labor unions--India--Kerala.
Agricultural laborers--Political activity--India--Kerala.
Social classes--India--Kerala.
Princeton subject headings:
Agricultural laborers--India--Kuttanad--Political activity.
Agricultural laborers--Labor unions--India--Kuttanad.
Social classes--India--Kuttanad.