Medii Aevi Kalendarium; Or, Dates, Charters, and Customs of the Middle Ages; With Kalendars From the Tenth to the Fifteenth Century; and an Alphabetical Digest of Obsolete Names of Days, Forming a Glossary of the Dates of the Middle Ages

Medii Aevi Kalendarium; Or, Dates, Charters, and Customs of the Middle Ages; With Kalendars From the Tenth to the Fifteenth Century; and an Alphabetical Digest of Obsolete Names of Days, Forming a Glossary of the Dates of the Middle Ages