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420 pages first pub 1989 (editions)

nonfiction history science informative slow-paced
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464 pages first pub 1989 (editions)

nonfiction history science informative slow-paced

521 pages first pub 1989 (editions) user-added

nonfiction history science informative slow-paced

15 hours, 2 minutes missing pub info (editions) user-added

nonfiction history science informative slow-paced