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296 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced
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248 pages first pub 1988 (editions) user-added

nonfiction science challenging informative slow-paced

missing page info first pub 1988 (editions)

nonfiction science challenging informative slow-paced

268 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

181 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

228 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

269 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

176 pages first pub 1988 (editions) user-added

nonfiction science challenging informative slow-paced

missing page info first pub 1988 (editions)

nonfiction science challenging informative slow-paced

248 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced

208 pages first pub 1988 (editions)

nonfiction science challenging informative slow-paced