(3HSJGf GdhGYXjf hQjGV GdSGeYjf (B/s - (3GHf GdLhRj, YHO GdQMef Hf Ydj Hf eMeO,s 508-597 (3g`(B.s; (3GdLejdj, GdSjO EHQGgjes ((3HjQhJ (B:s (3OGQ GdcJGH GdYQHj,s, 1993)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdhYX hGdEQTGOs; (3GdOYhI GdESdGejIs