Mathematical Mysteries: The Beauty and Magic of Numbers Autor Calvin C. Clawson 8 dec 1999 Paperback Preț: 179.25 lei 6-8 săpt.
The Mathematical Traveler: Exploring The Grand History Of Numbers Autor Calvin C. Clawson 8 mai 2003 Paperback Preț: 170.70 lei 6-8 săpt.