Refine by:
-
▾ Subject
- Marine navigation (10)
- ASTRONOMY (7)
- Horology (4)
- Longitude (3)
- Magnetism (2)
- Time Measuring Instruments (2)
- MATHEMATICS (1)
- MEDICAL SCIENCES (1)
- Medicine (1)
-
▾ Date
- 1700s C.E. (1)
- 1800s C.E. (11)