(3JPhb GdLeGd dJYjT SYjOG (B/ s - (3CSYO, jhSa ejNGFjds ((3GdbGgQg (B:s (3OGQ ZQjH ddWHGYI h GdfTQ,s, 1997)
Keywords: (3Yde GdfaSs; (3Yde GdLeGds