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8 hours, 59 minutes first pub 2008 (editions)

nonfiction science informative slow-paced
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240 pages first pub 2008 (editions)

nonfiction science informative slow-paced

256 pages first pub 2008 (editions)

nonfiction science informative slow-paced

256 pages first pub 2008 (editions)

nonfiction science informative slow-paced

210 pages first pub 2008 (editions)

nonfiction science informative slow-paced

256 pages first pub 2008 (editions)

nonfiction science informative slow-paced

8 hours, 59 minutes first pub 2008 (editions)

nonfiction science informative slow-paced

missing duration info first pub 2009 (editions)

nonfiction science informative slow-paced

224 pages first pub 2008 (editions)

nonfiction science informative slow-paced

240 pages first pub 2008 (editions)

nonfiction science informative slow-paced

8 hours, 59 minutes first pub 2008 (editions)

nonfiction science informative slow-paced