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Keywords
- Astrolabes[remove]31
- Early works28
- Manuscripts, Arabic28
- New Jersey--Princeton24
- Astronomy, Arab20
- Manuscripts, Persian11
- Astronomical instruments10
- Quadrants (Astronomical instruments)9
- Islamic Empire8
- Almucantar7
- Watermarks6
- Eighteenth century5
- Autographs4
- Geometry4
- Manuscripts, Turkish4
- Mathematics, Arab4
- Time measurements4
- Timekeeping4
- diagrams4
- Fifteenth century3