Keywords
- Calendar1
- Calendar reform1
- Calendar, Gregorian1
- Christianity1
- Cosmography1
- England1
- English (culture or style)1
- Ephemerides1
- Finding tabs1
- Fourteenth century1
- Geographia (Ptolemy)1
- Geography1
- Gothic (Medieval)1
- Graphs1
- Italy--Genoa1
- Manuscripts, European1
- Manuscripts, Italian1
- Manuscripts, Latin (Medieval and modern)1
- Manuscripts, Medieval1
- Monastic libraries1