(3LhGfH ef GdMjGI aj GdeZQH GdChSW (B:s (3aj GdbQf GdJGSY GdgLQj(B( 15(3e(B) /s - (3eMehO, HhYjGOs ((3GdLRGFQ (B:s (3GdTQcI GdhWfjI ddfTQ h GdJhRjY ,s, 1982)
Keywords: (3GdeZQH GdGhSWs; (3GdMjGI s