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225 pages first pub 2013 (editions)

nonfiction mathematics science adventurous informative slow-paced
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225 pages first pub 2013 (editions)

nonfiction mathematics science informative medium-paced

225 pages first pub 2013 (editions)

nonfiction mathematics science informative medium-paced

240 pages first pub 2013 (editions)

nonfiction mathematics science informative medium-paced

235 pages first pub 2013 (editions)

nonfiction mathematics science informative medium-paced