Hexaflexagons and other mathematical diversions : the first Scientific American book of puzzles & game

Name: Hexaflexagons and other mathematical diversions : the first Scientific American book of puzzles & game
Rating: 7.1 (29 reviews)
Author: /author/%CE%9C%CE%AC%CF%81%CF%84%CE%B9%CE%BD_%CE%93%CE%BA%CE%AC%CF%81%CE%BD%CF%84%CE%BD%CE%B5%CF%81_(Fads_and_Fallacies_in_the_Name_of_Science)