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Keywords
- Early works8
- Manuscripts, Arabic8
- Timekeeping[remove]8
- New Jersey--Princeton7
- Astrolabes3
- Astronomical instruments3
- Astronomy, Arab3
- Almucantar2
- Manuscripts, Persian2
- Qiblah2
- Quadrants (Astronomical instruments)2
- Arabic literature1
- Autographs1
- Calendar1
- Deep space--Sirius1
- Dialectic1
- Fasting--Religious aspects--Islam1
- Fasts and feasts--Islam1
- Geometry1
- Islamic Empire1