  
      Feltrinelli, Milano 2005, hardcover,       270 pages.             ISBN 9788807490361  
        
      
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       Universale Economica  Feltrinelli
2008,  
paperback,  
270 pages.  
ISBN 9788807720116 
 
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	  Feltrinelli Editore Milano,  hardcover
2nd edition,  October 2016,  270 pages, with Nobel obi 
ISBN 9788807490361 
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