TY  - DATA
AU  - Velleman, Daniel J.
AU  - Wagon, S.
TI  - Bicycle or unicycle?: a collection of intriguing mathematical puzzles 
T2  - Problem Books, 
SN  - 9781470457020 (online)
PY  - 2020///
CY  - [Washington, DC]
PB  - Mathematical Association of America
KW  - General -- General and miscellaneous specific topics -- Problem books
KW  - General -- General and miscellaneous specific topics -- Recreational mathematics
KW  - Mathematical recreations
N1  - Includes bibliographical references and index
UR  - https://doi.org/10.1090/prb/036
ER  -