(3GdHQGRjd (B: s (3TYHgG h CQVgG (B/ s - (3QhR, HQGhfs; (3EHQGgje, eMeO YHO GdaJGMs ((3GdbGgQI (B:s (3ecJHI GdfgVI GdeUQjI,s, 1969)
Keywords: (3GdHQGRjds; (3GdQMdGJ GdLZQGajIs