(3MbjbI GdaUd Hjf GdSdWGJ ai GdfXGe GdSjGSi hGdOSJhQi ddhdGjGJ GdeJMOI GdGeQjcjI (B/s - (3SYjO GdSjO Ydis ([(3ecGf GdfTQ ZjQ eMOO(B] :s [(3GdfGTQ ZjQ eMOO(B](3,s, 1999)
. 477-455(3HHdjhLQGajG(B: (3UaMGJ(B.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajI aj MhGTj GdUaMGJ(B.s
Keywords: (3GdMbhb hGdMQjGJ GdOSJhQjgs; (3GdhdGjGJ GdeJMOI GdCeQjcjIs