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Current edition

352 pages • missing pub info (editions)

nonfiction science challenging informative medium-paced

352 pages • missing pub info (editions)

nonfiction science challenging informative medium-paced

Other editions (1)

480 pages • first pub 1974 (editions)

nonfiction science challenging informative medium-paced

480 pages • first pub 1974 (editions)

nonfiction science challenging informative medium-paced

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