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324 pages first pub 2007 (editions)

nonfiction history science informative medium-paced
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304 pages first pub 2007 (editions)

nonfiction history science informative medium-paced

304 pages first pub 2007 (editions)

nonfiction history science informative medium-paced

300 pages first pub 2007 (editions)

nonfiction history science informative medium-paced