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Keywords
- Astrolabes[remove]39
- Early works35
- New Jersey--Princeton35
- Manuscripts, Arabic27
- Astronomy, Arab22
- Islamic Empire17
- Manuscripts, Persian16
- Astronomical instruments12
- Quadrants (Astronomical instruments)10
- Manuscripts, Turkish8
- Almucantar7
- History7
- Watermarks7
- Fifteenth century6
- Sources6
- Autographs5
- Calendars5
- Qiblah5
- Timekeeping5
- diagrams5