Expect the unexpected (or you wont find it.) : A creativity tool based on the ancient wisdom of Heraclitus 
Oech, Roger Von. 
 -  The Free Press.  2001 
 - 194 pages. 
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<br/><br/><label>ISBN: </label>0-7432-2287-3 
<br/><br/><label>Dewey Class. No.: </label>FIC O283 2001