Columbia subject headings:
Labor unions--India.
Roy, M. N. (Manabendra Nath), 1887-1954.
Harvard subject headings:
Indian Federation of Labour--History.
Labor unions--India--Political activity--History.
Roy, M. N. (Manabendra Nath), 1887-1954.
Princeton subject headings:
Indian Federation of Labour--History.
Labor unions--India--Political activity--History.
Roy, M. N. (Manabendra Nath), 1887-1954.