(3JfajP GdbGfhf GdOhdi GdEfSGfi (B/ s - (3SYjO SGde Lhjdis (b, 2003)
. 255-245 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3Mbhb GdEfSGfs; (3GdbGfhf GdOhdj GdYGes