Oberle, Aloyse P. <br/><br/>
Programming the IBM system/360 model 20 with RPG   
by Aloyse P. Oberle 
 - New Jersey  Prentice-Hall  1970 
 - ix, 166p.  incl. app., ind. 
<br/><br/><label>LCCN: </label>78-118981 
<br/><br/><label>Dewey Class. No.: </label>001.6424,IBM  / N70;2