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Current edition

211 pages • first pub 1991 (editions)

nonfiction science challenging informative slow-paced

211 pages • first pub 1991 (editions)

nonfiction science challenging informative slow-paced

Other editions (1)

224 pages • first pub 1991 (editions)

nonfiction science challenging informative slow-paced

224 pages • first pub 1991 (editions)

nonfiction science challenging informative slow-paced

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