(3Yde GdfaS (B: (3GdYdGL GdfaSj GdeYGUQ (B( (3JWHjbGJ ddfXQjGJ(B) / s - (3GdNhGLG, YHO GdaJGMs ((3YeGf (B:s (3OGQ GdeSJbHd ddfTQ h GdJhRjY,s, 2009)
Keywords: (3NOeGJ GdUMg GdYbdjgs; (3Yde GdfaSs; (3GdYdGL GdfaSjs