00270nam a2200109 a 450000500170000008200150001710000220003224500150005426000370006930000250010663000290013120251203091155.0  a428.1bSIL  aSilverlight, John  aMore words  aHong KongbMacmillan pressc1987  ax,126 p.b22 cm.cPB  aEnglish language - Usage