(3GdGSdGe hbVjI GdSdGe (B/s - (3jMji gGTe MSf aQZd s ((3GdbGgQI (B:s (3OGQ GdHjGf ddfTQ hGdJhRjY i ,s, 1999)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdGSdGe(B-(3bVGjG GdGUdGM(B-(3Mbhb GdGfSGfs; (3GdTQjYI GdGSdGejIs