(3bGehS GdceHjhJQ (B: s (3fXe GdEJUGdGJ (B- (3fXe GdeYdheGJ (B- (3bhGYO GdHjfGJ (B/ s - (3NTHI, eMeO GdSYjOs; (3YHO Gddg, eMehOs ((3GdbGgQI (B:s, 1987)
Keywords: (3GdMhGSjHs; (3GdHQGeLs; (3bhGYO GdHjGfGJs