(3GOH GdGWaGd (B: (3OQGSI h JWHjb (B/ s - (3YHOGdaJGM GHheYGds ((3GdbGgQI (B: s (3OGQ GdTQhb , s, 1988)
Keywords: (3GdGOH GdYQHis; (3GOH GdGWaGds; (3cJH GdGWaGds