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21 hours, 25 minutes first pub 2008 (editions)

nonfiction biography history science challenging informative slow-paced
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601 pages first pub 2008 (editions) user-added

nonfiction biography history science challenging informative slow-paced

380 pages first pub 2008 (editions)

nonfiction biography history science challenging informative slow-paced

608 pages first pub 2008 (editions) user-added

nonfiction biography history science challenging informative slow-paced

607 pages first pub 2008 (editions)

nonfiction biography history science challenging informative slow-paced