Summa de virtutibus (Treatise on the virtues); Summa vitiorum (Treatise on the vices), Free Library
Summa de virtutibus (Treatise on the virtues); Summa vitiorum (Treatise on the vices), Free Library of Philadelphia, c. 1300 (Lewis E 166)BiblioPhilly is LIVE!http://bibliophilly.library.upenn.edu/ -- source link
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