Refine by:
-
▾ Subject
- Longitude (11)
- ASTRONOMY (10)
- Geographical exploration (10)
- Marine navigation (10)
- Nautical instruments (10)
- Navigational aids (9)
- TRAVEL (6)
- Aids to navigation (2)
- Discoveries in geography (2)
- Horology (2)
- Maps (2)
- Navigation (2)
- Time Measuring Instruments (2)
- Magnetism (1)
- Navigation (science) (1)
- Ocean currents (1)
-
▾ Date
- 1700s C.E. (12)