Mensa <br/><br/>
Keep your mind fit: logic and deduction puzzles. stimulates your grey cells with over a hundred challenging puzzles 
Mensa 
 - London  Carlton  2010 
 - 176 p 
<br/><br/><label>ISBN: </label>9781847325358 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic puzzles
<br/><br/><label>Dewey Class. No.: </label>793.73 MEN