| Common name of collection | Petri Diaconi registrum | ||||||
| Also known as | Monte Cassino Manuscript | ||||||
| Type of collection | Letter collection (explanation and all of this type) | ||||||
| Date (relevant parts) | 12th century | ||||||
| Bibliographical reference | Monte Cassino, Archivio abbaziale, Petri Diaconi Registrum | ||||||
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