TY  - BOOK
AU  - Kraitchik,Maurice
TI  - Mathematical recreations 
SN  - 0-486-45358-8
U1  - 793.74 23rd.
PY  - 2006///
CY  - New York
PB  - Dover Publications
KW  - Mathematical recreations
UR  - www.doverpublications.com
ER  -