(3GdbGfhf GdOhdj GdYGe aj GdSde h GdMQH(B:s - (3GdTGaYj eMeO HTjQ(B.s ((3GdGScfOQjI(B:s (3efTCI GdeYGQa(B,s, 1971)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3bGfhf Ohdj YGes