(3Odjd GdehKbjf h GdecJHjjf aj GdhWf GdYQHj (B/ s - (3Hf NejS, GdgGOjs ((3JhfS (B:s (3GdefXeI GdYQHjI ddJQHjI h GdKbGaI h GdYdhe (B- (3GOGQI GdJhKjb h GdeYdheGJ,s, 1981)
Keywords: (3GdecJHjhfs; (3GdHdOGf GdYQHjIs; (3GdCOdIs; (3GdehKbhfs