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288 pages first pub 1988 (editions)

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

nonfiction science challenging informative slow-paced

239 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

292 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

173 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

245 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

464 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

255 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

221 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

200 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

220 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced