(3GdeUhf ai SQ Gdghi Gdecfhf (B/ s - (3GdMUQi (B, (3GHhGSMGb GHQGgje Hf Ys; (3GdfHhi YHOGdhGMO TYdGfs ([S.N] : (3OGQ GdYQHi ddfTQ hGdJhRjY , s, 1989)
Keywords: (3GdGOH GdYQHis; (3OhGhjf hbUGFOs; (3GdOhdI GdYHGSjI GdKGfjIs; (3JGQjN hfbOs