(3cfJ QFjSG deUQ (B/ s - (3eMeO fLjHs ([S.N] : (3GdecJH GdeUQi GdMOjK , s, 1993)
Keywords: (3GdYUQ GdMOjKs; (3eUQs; (3JGQjNs; (3GdGMhGd GdSjGSjIs; (3eMeO fLjHs; (3GdSdWIs; (3JQGLe PGJjIs