(3GdKbGaI GdYQHjI aj GdLRGFQ Hjf GdJCKjQ h GdJCKQ (B/s - (3eQJGV , YHO Gdedc s ((3eUQ (B:s (3OGQ GdMOGKI ,s, 1982)
Keywords: (3GdLRGFQ s; (3GdJCKjQ s; (3GdKbGaI s; (3GdYQHjI s