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1180 pages first pub 1998 (editions)

nonfiction science informative medium-paced
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1187 pages first pub 1998 (editions)

nonfiction science informative medium-paced

missing page info first pub 1998 (editions)

nonfiction science informative medium-paced

1140 pages first pub 1998 (editions)

nonfiction science informative medium-paced

missing page info first pub 1998 (editions)

nonfiction science informative medium-paced