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Current edition

385 pages • first pub 1978 (editions)

nonfiction science informative reflective medium-paced

385 pages • first pub 1978 (editions)

nonfiction science informative reflective medium-paced

Other editions (1)

383 pages • first pub 1978 (editions)

nonfiction science informative reflective medium-paced

383 pages • first pub 1978 (editions)

nonfiction science informative reflective medium-paced

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