RT Article T1 "Pueri", "iuvenes", and "viri": age and utility in the Gregorian reform JF The Catholic historical review VO 94 IS 3 SP 435 OP 449 A1 Cushing, Kathleen G. 1964- LA English PB The Catholic University of America Press YR 2008 UL https://www.ixtheo.de/Record/1646603052