KAUFER Erich <br/><br/>
Economics of the patent system 
KAUFER Erich; SCHERER F M 
 - London  Harwood academic publishers          1989 
 - viii,66p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Z:26730x.N89, M9/SC