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1184 pages first pub 1982 (editions)

nonfiction science challenging informative medium-paced
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1484 pages first pub 1982 (editions)

nonfiction science challenging informative medium-paced

1551 pages first pub 1982 (editions)

nonfiction science challenging informative medium-paced

928 pages first pub 1982 (editions)

nonfiction science challenging informative medium-paced

1040 pages first pub 1982 (editions)

nonfiction science challenging informative medium-paced

1056 pages first pub 1982 (editions)

nonfiction science challenging informative medium-paced

1344 pages first pub 1982 (editions)

nonfiction science challenging informative medium-paced

1258 pages first pub 1982 (editions)

nonfiction science challenging informative medium-paced