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416 pages first pub 1983 (editions) user-added

nonfiction science challenging informative slow-paced
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416 pages first pub 1983 (editions)

nonfiction science challenging informative slow-paced

413 pages first pub 1983 (editions)

nonfiction science challenging informative slow-paced

416 pages first pub 1983 (editions)

nonfiction science challenging informative slow-paced

415 pages first pub 1983 (editions)

nonfiction science challenging informative slow-paced

413 pages first pub 1983 (editions)

nonfiction science challenging informative slow-paced