(3GdEfbdGH GdSjGSj aj ESQGFjd (B: s (3GdCSQGQ h GdNaGjG (B: (3GdQLd GdPj dG jLjO GdEfJUGQ (B/ s - (3GRhdGj, GhQdjs; (3GdYbjdj, HOQs ((3YeGf (B:s (3OGQ GdLjd ddOQGSGJ,s, 1997)
Keywords: (3GdJQGLes; (3GdSjGSjhfs