> Publishers' series
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The history of Byzantine and Eastern canon law to 1500 ed. by Wilfried Hartmann
Washington, DC: Catholic Univ. of America Press, 2012
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The history of medieval canon law in the classical period, 1140 - 1234 from Gratian to the decretals of Pope Gregory IX ed. by Wilfried Hartmann
Washington, D.C.: Catholic Univ. of America Press, 2008
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Papal letters in the early Middle Ages Detlev Jasper and Horst Fuhrmann
Washington, D.C.: Catholic Univ. of America Press, 2001
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Canonical collections of the early Middle Ages (ca. 400 - 1140); a bibliographical guide to the manuscripts and literature Lotte Kéry
Washington, DC: Catholic University of America Press, 1999