Lerner, Stern <br/><br/>
The Rate And Direction Of Inventive Activity Revisited 

 -  University of Chicago Press  2013 
<br/><br/><label>ISBN: </label>9780226473062 
<br/><br/><label>Source: </label>EBOOK 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics & Finance