Friedmann, Wolfgang. <br/><br/>
Legal theory / 
Wolfgang Friedmann. 
 - 5th  ed. 
 - New York :  Columbia University Press,  1967. 
 - xx, 607  p. 
<br/><br/><label>ISBN: </label>0231031009 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Law--Philosophy.