Friedmann, W. (Wolfgang Gaston), 1907-1972. <br/><br/>
Legal theory / 
by W. Friedmann. 
 - 5th ed. 
 - London :  Stevens & Sons,  1967. 
 - 607 p. ;  23 cm. 
<br/><br/>p. 581-592. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Law--Philosophy.