Heron  <br/><br/>
Extreme sudoku for dummies  
/ Andrew Heron and Andrew Stuart. 
 - Hoboken  Wiley  2007. 
 - 356p.  ill.  18cm 
<br/><br/> Includes question and answer 
<br/><br/><label>ISBN: </label>0470116277  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic puzzles<br/>Sudoku
<br/><br/><label>Dewey Class. No.: </label>793.74 HER 2007