(3bGfhf GdHMGQ GdLOjO Hjf GdJbdjO hGdJLOjO (B/ s - (3SGSi SGde GdMGLs ((3HjQhJ (B:s (3eYgO GdCfeGA GdYQHi, s, 1987)
. 1037-1015 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdOhdj GdHMQjs; (3GdbGfhf GdOhdj GdYGes