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270 pages first pub 1999 (editions) user-added

nonfiction science challenging informative fast-paced
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272 pages first pub 1999 (editions)

nonfiction science challenging informative fast-paced

272 pages first pub 1999 (editions)

nonfiction science challenging informative fast-paced

272 pages first pub 1999 (editions)

nonfiction science challenging informative fast-paced

missing page info first pub 1999 (editions)

nonfiction science challenging informative fast-paced

missing page info first pub 1999 (editions)

nonfiction science challenging informative fast-paced

280 pages first pub 1999 (editions)

nonfiction science challenging informative fast-paced

279 pages first pub 1999 (editions)

nonfiction science challenging informative fast-paced