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417 pages first pub 2007 (editions)

nonfiction history science adventurous informative slow-paced
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343 pages first pub 2007 (editions)

nonfiction history science adventurous informative slow-paced

432 pages first pub 2007 (editions)

nonfiction history science adventurous informative slow-paced

348 pages first pub 2007 (editions)

nonfiction history science adventurous informative slow-paced