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3 hours, 55 minutes first pub 1991 (editions) user-added

nonfiction science
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288 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

285 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

270 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

322 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

350 pages first pub 1988 (editions) user-added

nonfiction science challenging informative slow-paced