Operating DOS/VS under VM/370 / 
IBM 
 - White Plains, N.Y.  International Business Machines Corporation  1978. 
 - 130p. in various pagings :   ill. ;   30 cm. 
<br/><br/> 'VM/370 operations'.  'Independent study program'.  'SR20-7220-0'. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Virtual computer systems.<br/>Electronic digital computers--Programming.