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351 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced
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351 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

352 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

351 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced