(3MUhd GdQab HCUhd GdQRb (B/s - (3GdSjhWj, YHO GdQMef Hf CHj HcQ Hf eMeO,s 849-911 (3gLQjG(B.s; (3GdCKQj, CHh GdaVd GdMhjfjs ((3WfWG, eUQ (B:s (3OGQ GdUMGHI ddJQGK,s, 1990)
Keywords: (3GdQRb (B((3abg ESdGej(B)s; (3GdCOYjI hGdChQGOs