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Keywords
- Astronomy, Arab2
- Early works2
- Manuscripts, Arabic2
- Manuscripts, Turkish2
- New Jersey--Princeton2
- Quadrants (Astronomical instruments)2
- Time measurements[remove]2
- Almucantar1
- Astrolabes1
- Astronomical instruments1
- Geographical positions1
- Ibn al-Majdī, Aḥmad ibn Rajab, 1366-1447. Irshād al-ḥāʼir1
- Illustrated works1
- Islamic Empire1
- Manuscripts, Persian1
- Sundials1
- diagrams1
- tables (documents)1