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Keywords
- Early works4
- Time measurements[remove]4
- Astronomy, Arab3
- Manuscripts, Arabic3
- Almucantar2
- Astrolabes2
- Astronomical instruments2
- New Jersey--Princeton2
- tables (documents)2
- Arab countries1
- Arabic language1
- Astronomy1
- Classification of sciences1
- Colored papers1
- Encyclopedias and dictionaries1
- Geographical positions1
- Geography1
- Handbooks and manuals1
- Islamic Empire1
- Lunar eclipses1