RT Article T1 Ockham on the Possibility of a Better World JF Mediaeval studies VO 38 SP 291 OP 312 A1 Maurer, Armand A. 1915-2008 LA English PB Institution YR 1976 UL https://ixtheo.de/Record/1816094420 DO 10.1484/J.MS.2.306209