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Keywords
- Astronomy, Arab[remove]2
- Manuscripts, Arabic2
- New Jersey--Princeton2
- Astronomical instruments1
- Early works1
- Egypt--Cairo1
- Eighteenth century1
- Geographical positions1
- Ibn al-Majdī, Aḥmad ibn Rajab, 1366-1447. Irshād al-ḥāʼir1
- Manuscripts, Turkish1
- Quadrants (Astronomical instruments)1
- Seventeenth century1
- Sundials1
- Tables1
- Time measurements1
- diagrams1
- tables (documents)1