Subject
- Geometry--Early works to 18008
- Astronomy, Arab6
- Astronomy--Early works to 18006
- Astronomy, Medieval5
- Optics -- Early works to 18003
- Arithmetic -- Early works to 19002
- Astronomy--Mathematics2
- Burning-mirrors2
- Mathematics -- Early works to 18002
- Algebra -- Early works to 18001
- Astronomy, Ancient1
- Cosmology -- early works to 18001
- Philosophy -- Early works to 18001