(3GdYHGS Hf GdGMfa (B((3TGYQ GdYTb hGdZQGe (B((3OQGSI fbOjI (B) / s - (3GdYQHi MSf OQhjTs ([S.N] : (3ecJHI GdfgVI GdeUQjI , s, 1991)
Keywords: (3GdTYQ GdYQHis; (3GdTYQ GdZRdis; (3JGQjN hfbOs