(3GdRjGQI Hjf GdfSGA Ydi VhA GdcJGH hGdSfI (B/s - (3OQhjT, NhdI YHO GdbGOQs ((3LOI, GdSYhOjI (B:s (3ecJHI GdShGOj ,s, 1992)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
(3HHdjhLQGajI (B: (3U(B. 213-216.s
Keywords: (3GdeQCI GdeSdeIs; (3GdCNdGb GdESdGejIs