(3eHGOi Yde GdGLQGe (B/s - (3fhQ GdOjf gfOGhjs ((3GdbGgQg (B:s (3OGQ GdfgVg GdYQHjg (B,s, 1990)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3Yde GdGLQGes