Refine by:
-
▾ Subject
- Marine navigation (36)
- ASTRONOMY (20)
- Longitude (17)
- Horology (13)
- Geographical exploration (6)
- MATHEMATICS (4)
- MEDICAL SCIENCES (4)
- Medicine (4)
- Time Measuring Instruments (4)
- Magnetism (2)
- Meteorology (2)
- NATURAL SCIENCES (2)
- Natural history (2)
- Commerce (1)
- MUSIC (1)
- TRADE (1)
- Temperature (1)
-
▾ Date
- 1700s C.E. (36)
- 1800s C.E. (22)