TY  - BOOK
T1  - Mathematical recreations & essays /
DA  - [1974]
CY  - Toronto ;
CY  - Buffalo :
AU  - Ball, W. W. Rouse
AU  - Coxeter, H. S. M.
ET  - 12th ed.
CN  - QA95
CN  - QA95
PB  - University of Toronto Press,
PP  - Toronto ;
PP  - Buffalo :
PY  - [1974]
N1  - First-3d ed. published under title: Mathematical recreations and problems of past and present times.
N1  - Includes index.
ID  - 61672
KW  - Mathematical recreations.
KW  - Geometry
KW  - Cryptography.
KW  - Ciphers.
SN  - 0802018440 0
TI  - Mathematical recreations & essays /
ER  -