Ritchie, C. <br/><br/>
Operating systems: incorporating UNIX and MS-DOS 
by C. Ritchie 
 - New Delhi  BPB  1993 
 - vii, 226p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MS-DOS<br/>Operating systems-UNIX
<br/><br/><label>Dewey Class. No.: </label>I5373 R511