About 14 results ()
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▾ Collection
- Papers of John Pond (11)
- Papers of the Board of Longitude (3)
- Royal Greenwich Observatory Archives (14)
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▾ Subject
- Marine navigation (14)
- Time Measuring Instruments (11)
- Longitude (5)
- ASTRONOMY (3)
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▾ Date
- 1800s C.E. (14)