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416 pages first pub 2015 (editions)

nonfiction science challenging informative slow-paced
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408 pages first pub 2015 (editions)

nonfiction science challenging informative slow-paced

408 pages first pub 2015 (editions)

nonfiction science challenging informative slow-paced

574 pages first pub 2015 (editions) user-added

nonfiction science challenging informative slow-paced