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1094 pages first pub 1999 (editions)

nonfiction science challenging informative medium-paced
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1024 pages missing pub info (editions)

nonfiction science medium-paced

missing page info missing pub info (editions)

nonfiction science medium-paced

missing page info missing pub info (editions)

nonfiction science medium-paced

missing page info missing pub info (editions)

nonfiction science medium-paced

missing page info missing pub info (editions)

nonfiction science medium-paced

787 pages missing pub info (editions)

nonfiction science medium-paced