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Keywords
- Agriculture--Religious aspects--Hinduism1
- Alchemy1
- Alexander, the Great, 356 B.C.-323 B.C.2
- Almagest (Ptolemy)2
- Almanach perpetuum celestium motuum (Zacuto, Abraham ben Samuel)1
- Almanacs1
- Almucantar1
- Annotations4
- Aristotle2
- Arithmetic4
- Armenia1
- Astrolabes5
- Astrology13
- Astrology, Arab2
- Astronomical instruments3
- Astronomy[remove]97
- Astronomy, Arab9
- Astronomy, Greek1
- Astronomy, Medieval9
- Astronomy--Mathematics2