(3GdMeGjI GdLfGFjI dMb GdEfSGf ai UhQJg (B/s - (3gTGe eMeO aQjOs ((3CSjhW (B:s (3ecJHI GdCdGJ GdMOjKI ,s, 1986)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3bGfhf GdYbhHGJ (B- (3GdbSe GdYGes -- (3eUQs