Refine by:
-
▾ Subject
- Ptolemy (4)
- instrument(s) (3)
- Armillary Sphere (2)
- lens (2)
- refraction (2)
- Atlas (1)
- Bettes (1)
- Day (1)
- Earth (1)
- Joannes (1)
- John (1)
- Norwich (1)
- Ptolemy�s Rulers (1)
- Sacrobosco (1)
- Telescope (1)
- World (1)
- altitude (1)
- atmosphere (1)
- atmospheric refraction (1)
- burning (1)
- calendar (1)
- chorography (1)
- city (1)
- compass (1)
- concentric circles (1)
- convex (1)
- cosmological diagram (1)
- dog (1)
- dominical letter (1)
- eclipse (1)