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288 pages first pub 2004 (editions)

nonfiction science challenging informative slow-paced
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294 pages first pub 2004 (editions)

nonfiction science challenging informative slow-paced

270 pages first pub 2004 (editions)

nonfiction science challenging informative slow-paced

288 pages first pub 2004 (editions)

nonfiction science challenging informative slow-paced

270 pages first pub 2004 (editions) user-added

nonfiction science challenging informative slow-paced