(3GdeDGeQGJ GdNajI VO GdESdGe h GdeSjMjI (B/ s - (3Yha, CMeO eMeOs ((3GdbGgQI (B:s (3GdRgQGA ddEYdGe GdYQHj,s, 1992)
Keywords: (3GdeGShfjIs; (3GdUgjhfjIs; (3GdaQb GdESdGejIs