RT Article T1 The Decretals of Gelasius I: making Canon Law in Late Antiquity JF Lex et religio SP 657 OP 668 A1 Neil, Bronwen 1969- LA English PB Institutum Patristicum Augustinianum YR 2013 UL https://ixtheo.de/Record/1879030292 SN 9788879611152