(3TYQGA eG HYO GdOjhGf (B/ s - (3YHOGddWja YHOGdMdjes ([S.N] : (3ecJHI GdfgVI GdeUQjI , s, 1987)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3eUQs; (3OhGhjf hbUGFOs