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219 pages first pub 2007 (editions)

nonfiction history science challenging informative slow-paced
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254 pages first pub 2007 (editions)

nonfiction history science challenging informative slow-paced

9 hours, 3 minutes first pub 2007 (editions) user-added

nonfiction history science challenging informative slow-paced

264 pages first pub 2007 (editions)

nonfiction history science challenging informative slow-paced