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Mental Gymnastics: Recreational Mathematics Puzzles

by Dick Hess

ISBN 13: 9780486480541

Format: Paperback (160 pages)
Publisher: Dover Publications Inc.
Published: 16 Jun 2011

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The Population Explosion and Other Mathematical Puzzles

by Dick Hess

ISBN 13: 9789814740975

Format: Hardcover (150 pages)
Publisher: World Scientific Publishing Company
Published: 15 May 2016

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