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Keywords
- Arab countries1
- Astrolabes1
- Astronomical instruments1
- Astronomy, Arab2
- Colored papers1
- Early works2
- Geographical positions[remove]2
- Ibn al-Majdī, Aḥmad ibn Rajab, 1366-1447. Irshād al-ḥāʼir1
- Lunar eclipses1
- Manuscripts, Arabic2
- Manuscripts, Turkish1
- Months1
- Names1
- New Jersey--Princeton2
- Quadrants (Astronomical instruments)1
- Solar eclipses1
- Sundials1
- Terminology1
- Time measurements2
- diagrams1