TY  - BOOK
AU  - Gardner,Martin
TI  - Mathematical circus: more games, puzzles, paradoxes, & other mathematical entertainments from Scientific American 
SN  - 0394502078
PY  - 1979///
CY  - New York
PB  - Knopf
KW  - Mathematical recreations
N1  - Bibliography : p. 263-272
ER  -