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336 pages first pub 2017 (editions)

nonfiction history science challenging informative medium-paced
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399 pages first pub 2017 (editions)

nonfiction history science challenging informative medium-paced

336 pages first pub 2017 (editions)

nonfiction history science challenging informative medium-paced

432 pages first pub 2017 (editions)

nonfiction history science challenging informative medium-paced

330 pages first pub 2017 (editions) user-added

nonfiction history science challenging informative medium-paced