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Paperback Splitting the Second Book

ISBN: 0750306408

ISBN13: 9780750306409

Splitting the Second

Until the 1950s timekeeping was based on the apparent motion of the Sun that in turn reflected the rotation of the Earth on its axis. But the Earth does not turn smoothly. By the 1940s it was clear... This description may be from another edition of this product.

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Format: Paperback

Condition: Good

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