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385 pages first pub 2007 (editions)

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

nonfiction science informative reflective slow-paced

400 pages first pub 2007 (editions)

nonfiction science informative reflective slow-paced

390 pages first pub 2007 (editions)

nonfiction science informative reflective slow-paced