De Bono Edward  <br/><br/>
Edward de bono six thinking hats 

 - Delhi :  Penguin Books ,  1992. 
 - 177 
<br/><br/><label>ISBN: </label>9780241257531 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cology
<br/><br/><label>Dewey Class. No.: </label>008  / DE