TY  - BOOK
AU  - Gardner, Martin
TI  - Mathematical puzzles and diversions / 
U1  - 519.3 
PY  - 1961///
CY  - London
PB  - G. Bell And Sons  Ltd
KW  - Statistics
KW  - Hexaflexagons
KW  - Magic with matrix
KW  - Mathematical card tricks
ER  -