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448 pages first pub 2015 (editions)

nonfiction science challenging informative slow-paced
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missing duration info first pub 2015 (editions) user-added

nonfiction science challenging informative slow-paced

416 pages first pub 2015 (editions)

nonfiction science challenging informative slow-paced

368 pages first pub 2015 (editions)

nonfiction science challenging informative slow-paced

11 hours, 27 minutes first pub 2015 (editions) user-added

nonfiction science challenging informative slow-paced

582 pages first pub 2015 (editions)

nonfiction science challenging informative slow-paced

431 pages first pub 2015 (editions)

nonfiction science challenging informative slow-paced

320 pages first pub 2015 (editions)

nonfiction science challenging informative slow-paced