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240 pages first pub 1996 (editions)

nonfiction history science challenging informative slow-paced
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227 pages first pub 1996 (editions)

nonfiction history science challenging informative slow-paced

239 pages first pub 1996 (editions)

nonfiction history science challenging informative slow-paced

240 pages first pub 1996 (editions)

nonfiction history science challenging informative slow-paced

227 pages first pub 1996 (editions)

nonfiction history science challenging informative slow-paced

240 pages first pub 1996 (editions)

nonfiction history science challenging informative slow-paced