(3GdJaSjQ GdbQBfj ddbQBf (B: s (3ShQI Bd YeQGf eOfjI h BjGJgG eGFJGf (B/ s - (3GdLed, MSf YR GdOjfs (1989)
(3EYJeO eL(B2(3aj GdhUa GdHHdjhZQGajs
Keywords: (3GdbQBf GdcQjes; (3JaSjQ GdbQBfs