(3OjhGf XGaQ GdMOGO GHf GdGScfOQjI (B/ s - (3MSjf fUGQs; (3XGaQ GdMOGO, GHhefUhQ XGaQs ([S.N] : (3ecJHI eUQ , s, 1969)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3OhGhjf hbUGFOs