| http://www.w3.org/ns/prov#value | - ames, puzzles, paradoxes and other mathematical entertainments from scientific American@enMathematical circus : more games, puzzles, paradoxes and other mathematical entertainments from scientific AmericanMathematical circus : more games, puzzles, paradoxes, and other mathematical entertainments form Scientific American with thoughts from readers, afterthoughts from the author, and 105 drawing
|
