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Incipit summa seu op[us] de virtutibus vilhelmi episcopi lugdunen[sis] nec non ordinis fr[atru]m p[re]dicato[rum]

by Guilelmus Peraldus, Michael Wenssler, Boniface Grandjean, J. E. Carpenter, John Henry Luers, C. C. Carpenter, Roggenburg (Premonstratensian abbey)