About 190 results ()
Refine by:
-
▾ Subject
- ASTRONOMY (36)
- Marine navigation (28)
- Longitude (24)
- Navigational aids (15)
- Nautical instruments (14)
- Geographical exploration (12)
- MATHEMATICS (8)
- MEDICAL SCIENCES (8)
- Medicine (8)
- Time Measuring Instruments (8)
- TRAVEL (6)
- Aids to navigation (5)
- Discoveries in geography (5)
- Maps (5)
- Navigation (5)
- PUBLISHING (3)
- Astronomical Observatories (2)
- Horology (2)
- Magnetism (2)
- Colonial administration (1)
- Navigation (science) (1)
- SCIENCE (1)