(3bhGYO GddZI GdJQcjI GdeYGUQI (B/s - (3GdYdGa, TGed aNQj (B.s ((3LGeYI GdehUd (B: s (3OGQ GdcJH ddWHGYI hGdfTQ , s, 1991)
(3jJVef GdfU HGddZI GdYQHjI hGddZI GdJQcjIs
Keywords: (3GddZI GdJQcjIs