Microsoft MS-DOS :  user's guide : operating system version 3.3. 

 - USA :  Microsoft Corporation,  c1987. 
 - vii, 386 pages :  illustrations ;  24 cm 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)--Software.
<br/><br/><label>Dewey Class. No.: </label>005.4 MIC