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384 pages first pub 2002 (editions)

nonfiction science challenging informative medium-paced
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362 pages missing pub info (editions)

nonfiction reference science challenging informative reflective medium-paced

335 pages missing pub info (editions)

nonfiction science challenging informative medium-paced

357 pages missing pub info (editions)

nonfiction reference science challenging informative reflective medium-paced

379 pages missing pub info (editions)

nonfiction science challenging informative medium-paced