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351 pages first pub 1977 (editions)

nonfiction history science challenging informative medium-paced
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368 pages first pub 1977 (editions)

nonfiction history science challenging informative medium-paced

368 pages first pub 1977 (editions)

nonfiction history science challenging informative medium-paced

missing duration info first pub 1977 (editions)

nonfiction history science challenging informative medium-paced

355 pages first pub 1977 (editions)

nonfiction history science challenging informative medium-paced

235 pages first pub 1977 (editions)

nonfiction history science challenging informative medium-paced

239 pages first pub 1977 (editions)

nonfiction history science challenging informative medium-paced

275 pages first pub 1977 (editions)

nonfiction history science challenging informative medium-paced