(3GdEJbGf aj Ydhe GdbQBf(B.s (3GdLRA GdChd (B/s - (3GdLdGd GdSjhWj, YHO GdQMef Hf CHj HcQ Hf eMeO,s 849-911 (3gLQjG(B.s; (3EHQGgje , eMeO GHh GdaVds ((3HjQhJ (B:s (3GdecJHI GdYUQjI ,s, 1987)
Keywords: (3GdbQBfs -- (3Ydhes