(3Ydi WQjb GdKhQIs - (3aDGO GdQcGHj s ((3eUQ (B:s (3GdOGQ GdbhejI (B,s, 1999)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3KhQGJ SjGSjI s