(3GdhbGjI ef GdeNOQGJ (B/s - (3GdSYO, UGdMs ((3YeGf, GdCQOf (B:s (3OGQ UaGA ddfTQ hGdJhRjY,s, 1999)
(3HHdjhLQGajI (B: (3UaMI (B198-203.s
Keywords: (3GdeNOQGJ hGdTHGHs; (3ecGaMI GdeNOQGJs