RT Article T1 Book six of Augustine's "De musica" and the episcopal embassies of 408 JF Augustinian studies VO 35 IS 2 SP 165 OP 198 A1 Hermanowicz, Erika T. LA English YR 2004 UL https://ixtheo.de/Record/1644196069 K1 Augustinus, Aurelius : Heiliger : 354-430 : De musica