(3TQM bGfhf GdYbhHGJ (B: s (3GdbSe GdNGU (B/ s - (3GdMOjKj , aNQj YHO GdQRGb UdjHj s ((3GdbGgQI (B: s (3TQcI GdYGJc , s, 2007)
Keywords: (3bGfhf GdYbhHGJ s