Keywords
- Alchemy1
- Aleramo, Marquis of Monferrato, -9671
- Alexander III, Pope, -11811
- Alfonso V, King of Aragon, 1396-14581
- Algebra1
- Amadori, Bartolomeo1
- Amadori, Lorenzo1
- Amadori, Niccolo1
- Angels1
- Animal culture1
- Antiquities1
- Apocryphal and legendary literature1
- Aqueducts1
- Architecture--Orders1
- Arithmetic1
- Arithmetic--Study and teaching1
- Arrighi family1
- Arrigucci, Andrea1
- Arrigucci, Caterina1
- Arrigucci, Donato1