00307nam a2200109Ia 450000500170000000800410001702000180005808200160007610000210009224500550011326000290016820250516145653.0250516s9999    xx            000 0 und d  a9780393050714  a780.92bWOL  aWolff, Christoph 0aBach'S Musical Universe - The Composer And Hiswork  bW. W. Norton & Co.c2020