(3YdeGA GdGKGQ (B/ s - (3OhQJi JTGQdR eGjcds; (3eMeO YHOGdaJGM GHQGgje (B((3eJQLe(B)s ([S.N] : (3ecJHI GdGfLdhGdeUQjI , s, 1969)
Keywords: (3GdYdeGAs; (3GdJQGLes; (3GdecJTahfs; (3GdGKQjhfs