(3GdeRGQY GdHGQY(B: (3JYdje GdGOGQI dUZGQ GdeRGQYjf (B/ s - (3HQhS e(B0 (3dGfShGjds; (3eMLhH YeQs ([S.N] : (3Odehf ddfTQ , s, 1989)
Keywords: (3GdGOGQIs; (3JfXje hGOGQIs; (3GdGOGQI GdRGQYjIs; (3GdeRGQYs