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Keywords
- Astronomical instruments1
- Astronomy, Arab1
- Early works1
- Geographical positions1
- Ibn al-Majdī, Aḥmad ibn Rajab, 1366-1447. Irshād al-ḥāʼir[remove]1
- Manuscripts, Arabic1
- Manuscripts, Turkish1
- New Jersey--Princeton1
- Quadrants (Astronomical instruments)1
- Sundials1
- Time measurements1
- diagrams1
- tables (documents)1