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405 pages first pub 1960 (editions)

nonfiction history science challenging informative slow-paced
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940 pages first pub 1960 (editions)

nonfiction history science challenging informative slow-paced

880 pages first pub 1960 (editions)

nonfiction history science challenging informative slow-paced

825 pages first pub 1960 (editions) user-added

nonfiction history science challenging informative slow-paced

825 pages first pub 1960 (editions) user-added

nonfiction history science challenging informative slow-paced