(3GdHJQhd hGbJUGOjGJ GdGeGQGJ GdYQHjI GdeJMOI (B/ s - (3eGfY SYjO GdYJjHIs ([S.N] : (3dG jhLO , s, 1990)
Keywords: (3GdGbJUGOs; (3GdHJQhds; (3GdGeGQGJ GdYQHjI GdeJMOIs