Roam, D <br/><br/>
The back of the napkin: Solving problems and selling ideas with pictures 

 - New York  Penguin Group  2010 
 - xv, 284p. 
<br/><br/><label>ISBN: </label>9781591842699 
<br/><br/><label>Dewey Class. No.: </label>658.403 ROA