(3BZGNGf hegeJg ai eUQ ai HOGjI GdMQH GdYGdejI GdChdis - (3CHGXI ,aGQhb YKeGfs ((3GdbGgQIs (3OGQ GdeYGQas, 1981)
8
Keywords: (3GdMQH GdYGdejI GdChdis; (3GdSjGSjhf(B-(3JQGLes; (3eUQ(B-(3JGQjN(B-(3GdYUQ GdMOjKs