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368 pages first pub 2002 (editions)

nonfiction history science challenging slow-paced
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368 pages first pub 2002 (editions)

nonfiction history science challenging slow-paced

350 pages first pub 2002 (editions)

nonfiction history science adventurous challenging informative slow-paced

345 pages first pub 2002 (editions)

nonfiction history science challenging slow-paced