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missing duration info first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced
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384 pages first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced

320 pages first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced

336 pages first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced

364 pages first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced

427 pages first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced

392 pages first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced

360 pages first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced

430 pages first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced

missing page info first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced

536 pages first pub 1994 (editions)

nonfiction science challenging informative reflective slow-paced