(3GdejKhdhLjG YfO GdYQH (B:s (3OQGSI deLehYI ef GdCSGWjQ h GdeYJbOGJ GdYQHjI GdbOjeI (B/s - (3eQJGV,YHO GdeGdc s ((3JhfS (B;(3GdLRGFQ (B:s (3GdOGQ GdJhfSjI ddfTQ(B;(3GdeDSSI GdhWfjI ddcJGH ,s, 1989)
Keywords: (3GdCSGWjQ s; (3GdYQH s; (3GdeYJbOGJs; (3GdejKhdhLjG s