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384 pages first pub 1999 (editions)

nonfiction science informative slow-paced
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318 pages first pub 1999 (editions)

nonfiction science informative slow-paced

318 pages first pub 1999 (editions)

nonfiction science informative slow-paced

missing page info first pub 2001 (editions)

nonfiction science challenging informative lighthearted slow-paced

missing page info first pub 1999 (editions)

nonfiction science informative slow-paced

400 pages first pub 1999 (editions)

nonfiction science informative slow-paced

384 pages first pub 1999 (editions)

nonfiction reference science challenging informative slow-paced

missing page info first pub 1999 (editions)

nonfiction reference science challenging informative lighthearted slow-paced

385 pages first pub 1999 (editions) user-added

nonfiction science informative slow-paced

missing page info first pub 1999 (editions)

nonfiction science informative slow-paced