Keywords
- treatises5
- Quadrants (Astronomical instruments)4
- Sixteenth century4
- Timekeeping4
- Almucantar3
- Astronomy, Medieval3
- Austria3
- Calendars3
- Charts, diagrams, etc.3
- Islamic calendar3
- Manuscripts, Hebrew3
- Tables (Data)3
- Turkey3
- scientific illustrations (images)3
- Astrology, Arab2
- Astronomy, Ancient2
- Islamic Empire2
- Islamic countries2
- Manuscripts2
- Manuscripts, German2