(3GdEJUGd GdLeGgjQj h GdeLJeY GdMOjK (B:s (3GdfXQjI h GdJWHjb (B/s - (3LGHQ,SGejI eMeO s ([(3Ohf ecGf(B] :s (3OGQ GdeYQaI GdLGeYjI ,s, 1982)
Keywords: (3GdGJUGds; (3GdGJUGd GdLeGgjQjs