1.
Which Way Did the Bicycle Go? And Other Intriguing Mathematical Mysteries
by Konhauser, Joseph D., Velle...
ISBN: 9780883853252
List Price: $34.25
2.
Which Way Did the Bicycle Go? : And Other Intriguing Mathematical Mysteries
by D., Joseph, Velleman, Dan, ...
ISBN: 9781470463823
List Price: $36.00