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403 pages first pub 1997 (editions) user-added

nonfiction science technology informative medium-paced
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416 pages first pub 1997 (editions)

nonfiction science technology informative medium-paced

403 pages first pub 1997 (editions)

nonfiction science technology informative medium-paced

552 pages first pub 1997 (editions)

nonfiction science technology informative medium-paced

460 pages first pub 1997 (editions)

nonfiction science technology informative medium-paced

403 pages first pub 1998 (editions)

nonfiction science technology informative medium-paced

403 pages first pub 1997 (editions)

nonfiction science technology informative medium-paced