Hexaflexagons and Other Mathematical Diversions: The First 'Scientific American' Book of Puzzles and Games
Manufacturer: University of Chicago Press
Release date: 15 September 1988
ISBN-10 : 0226282546 | ISBN-13: 9780226282541
Release date: 15 September 1988
ISBN-10 : 0226282546 | ISBN-13: 9780226282541
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