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2
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Galileo / Colin A. Ronan.
- 520.924 R768
- Ronan, Colin A.,
- Putnam,
- New York :
-
Discovering the universe : a history of astronomy / Colin A. Ronan.
- 520.9 R768
- Ronan, Colin A.,
- Basic Books,
- [1971?] ©1971.
- New York :