Mullker, Gert H. <br/><br/>
Sets and classes on the work by Paul Bernays   
by Gert H. Mullker 
 - Amsterdam  North-Holland Pub. Co.  1976 
 - xxiii, 358p, 
 - Studies in Logic and the Foundations of Mathematics  V.8 .
<br/><br/><label>ISBN: </label>0720422841 
<br/><br/><label>LCCN: </label>76-16791 
<br/><br/><label>Dewey Class. No.: </label>511.32  / N76