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330 pages 2017

nonfiction history science challenging informative slow-paced
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352 pages hardcover 2017

nonfiction history science challenging informative slow-paced

8 hours, 38 minutes audio 2017

nonfiction history science challenging informative slow-paced

352 pages paperback 2017

nonfiction history science challenging informative slow-paced

368 pages paperback 2017

nonfiction history science challenging informative slow-paced