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460 pages first pub 2007 (editions)

nonfiction science challenging informative slow-paced
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480 pages first pub 2007 (editions)

nonfiction science challenging informative slow-paced

480 pages first pub 2007 (editions)

nonfiction science challenging informative slow-paced

480 pages first pub 2007 (editions)

nonfiction science challenging informative slow-paced

384 pages first pub 2007 (editions)

nonfiction science challenging informative slow-paced