(3bUJj eY GdYdGL HGdYfH (B: s (3GdESJTaGA HGdYfH h WQb GdJOGhj Hg (B/ s - (3GdMSjfj, Cjefs ((3GdbGgQg (B:s (3OGQ GdWdGFY,s, 1992)
Keywords: (3GdWH GdTYHjs; (3GdYfHs