(3GdaQGJ aj Xd bhGYO GdbGfhf GdOhdj GdYGe(B/s - (3YRGdOjf Ydj GdNjQs ((3eUQ(B:s (3OGQ GdLjd ddWHGYI(B,s, 1975)
(3jMJhj Ydj UhQ h EjVGMjGJ s
Keywords: (3bGfhf Ohdj YGes; (3GdbGfhf GdOhdj GdHMQjs