(3JMdjd GdNWGH (B:s (3GdJMdjd GdfUj aj GdHMK GdGLJeGYj (B/s - (3aGQcdha,fhQeGf ,WdGd,hgHI s ((3dHfGf (B:s (3GdefXeI GdYQHjI ddJQLeI ,s, 2009)
Keywords: (3GdHMK GdGLJeGYj s; (3GdJMdjd GdfUj s; (3JMdjd GdNWGH s