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400 pages 1997

nonfiction science informative reflective medium-paced
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385 pages paperback 1997

nonfiction science informative reflective medium-paced

317 pages hardcover 1997

nonfiction science informative reflective medium-paced

400 pages paperback 1997

nonfiction science informative reflective medium-paced

385 pages paperback 1997

nonfiction science informative reflective medium-paced

385 pages paperback 1997

nonfiction science informative reflective medium-paced