(3GdGNJjGQ dJYdjd GdeNJGQ(B/s - (3GdMfaj,YHOGddg Hf eMehO Hf ehOhO GdehUdjs ((3HjQhJ(B[(3dHfGf(B]:s (3OGQ GdeYQaI,s, 1975)
Keywords: (3GdabI GdGSdGejs