(3GdbGfhf GdOhdj GdYGe (B/ s - (3GHQGgje eMeO GdYfGfjs ((3GdbGgQI (B: s (3OGQ GdacQ GdYQHj , s, 1987)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdbGfhf GdOhdj GdYGes