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missing duration info first pub 2012 (editions) user-added

nonfiction science challenging informative medium-paced
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560 pages first pub 2012 (editions)

nonfiction science challenging informative medium-paced

710 pages first pub 2012 (editions)

nonfiction science challenging informative medium-paced

missing page info first pub 2012 (editions)

nonfiction science challenging informative medium-paced

656 pages first pub 2012 (editions)

nonfiction science challenging informative medium-paced

656 pages first pub 2012 (editions)

nonfiction science challenging informative medium-paced

538 pages first pub 2012 (editions)

nonfiction science challenging informative medium-paced

480 pages first pub 2012 (editions)

nonfiction science challenging informative medium-paced

560 pages first pub 2012 (editions)

nonfiction science challenging informative medium-paced

772 pages first pub 2012 (editions)

nonfiction science challenging informative medium-paced

534 pages first pub 2012 (editions)

nonfiction science challenging informative medium-paced