(AGI) Milan, July 21 - Milan stocks closed lower, with the FTSEMIB down 1.47 percent to 20,431 points and the All Share down1.43 percent. Milan was the worst-performing European market,with banking shares falling sharply and industrial sharesbearish. Energy shares dipped, although Snam held fast. WorldDuty Free and Salini Impregilo tumbled. . .