Keywords
- Mathematics, Arab19
- Arithmetic16
- Watermarks16
- Rites and ceremonies11
- Astrology10
- Treatises10
- New York (State)--New York9
- drawings (visual works)9
- Autographs8
- Manuals (instructional materials)8
- Manuscripts, Latin8
- Manuscripts, Medieval8
- Stamps8
- scientific illustrations (images)8
- Astrolabes7
- Astrology, Arab7
- Hindu mathematics7
- Astronomy, Medieval6
- Fifteenth century6
- Geometry6