(3OQGSI aj GdahdcdhQ hGdKbGaI (B:s (3fMh JCUjd dYde GdEfSGf (B/s - (3Gdedbj, gjGes ((3GdQjGV (B:s (3OGQ GdThGa ddfTQ hGdJhRjY,s, 1990)
(3HHdjhLQGajI (B: (3U(B. 482-487.s
Keywords: (3GdahdcdhQs; (3GdKbGaIs; (3GdCfKQhHhdhLjG GdKbGajIs