Levitt steven D & Dubner stephen J <br/><br/>
Freakonomics 

 -  "Harper perennial ,new york"  2005 
<br/><br/><label>ISBN: </label>978-0-06-231267-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English
<br/><br/><label>Dewey Class. No.: </label>"O,111     P5"