Maddox, John
What remains to be discovered : mapping the secrets of the universe, the origins of life, and the future of human race
Touchstone Book, 1999
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Steel, Danielle
Secrets
Sphere Books, 1985
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Hales, Dianne
Mona Lisa : a life discovered
Simon & Schuster, 2014
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Pasachoff, Jay M.
The cosmos : astronomy in the new millennium
Thomson, 2001
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Botting, Douglas
Humbuldt and the cosmos/Douglas Botting
Harper & Row, 1973
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