TY  - BOOK
AU  - Holt,Michael
AU  - Dienes,Zoltan P.
TI  - Let's play math
SN  - 0802704182
AV  - QA95 .H64 1973
U1  - 793.7/4 
PY  - 1973///]
CY  - New York
PB  - Walker
KW  - Mathematical recreations
UR  - http://www.archive.org/details/letsplaymath00holt
UR  - http://www.openlibrary.org/books/OL5311432M
ER  -