More sex is safer sex  the unconventional wisdom of economics 
Steven E. Landsburg.  
 - xii, 275 pages.  illustration  24cm. 
<br/><br/>Includes index  
<br/><br/><label>ISBN: </label>9781416532224 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics--Sociological aspects.<br/>United States--Economic conditions--21st century.