TY  - BOOK
AU  - Mensa
TI  - Keep your mind fit: logic and deduction puzzles. stimulates your grey cells with over a hundred challenging puzzles
SN  - 9781847325358
U1  - 793.73 MEN 
PY  - 2010///
CY  - London
PB  - Carlton
KW  - Logic puzzles
ER  -