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544 pages first pub 1991 (editions)

nonfiction science challenging informative reflective slow-paced
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544 pages first pub 1991 (editions)

nonfiction science challenging informative reflective slow-paced

540 pages first pub 1991 (editions)

nonfiction science challenging informative reflective slow-paced

540 pages first pub 1991 (editions)

nonfiction science challenging informative reflective slow-paced

missing duration info first pub 1991 (editions)

nonfiction science informative reflective slow-paced

540 pages first pub 1991 (editions)

nonfiction science challenging informative reflective slow-paced