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Keywords
- Alchemy1
- Alexander, the Great, 356 B.C.-323 B.C.1
- Algebra1
- Annotations2
- Arab countries2
- Arithmetic1
- Astrolabes1
- Astronomy3
- Astronomy, Medieval1
- Balances (Weighing instruments)1
- Civil law1
- Early works21
- Education of princes1
- Fifteenth century5
- Four elements (Philosophy)1
- Fourteenth century2
- Geography, Medieval1
- Geometry2
- Gregorian chants1
- Gregorian chants--Manuscripts1