| ISBN: | 9781439559321 |
| Publisher: | Paw Prints |
| Published: | 8 October, 2008 |
| Format: | Book |
| Language: | English |
| Editions: |
62 other editions
of this product
|
Describes the forty-year effort of John Harrison to invent the chronometer, the first instrument able to keep accurate time for navigational purposes.
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