About 10 results ()
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▾ Collection
- National Maritime Museum Manuscripts (8)
- Papers of John Pond (2)
- Royal Greenwich Observatory Archives (10)
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▾ Subject
- Marine navigation (8)
- ASTRONOMY (5)
- Horology (3)
- Longitude (3)
- Magnetism (2)
- Time Measuring Instruments (2)
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▾ Date
- 1800s C.E. (10)