CONCISE user's guide: microsoft MS-DOS 6.22 for the MS-DOS operating system 

 - Scotland  Microsoft Corporation  1994 
 - varied pagings 
<br/><br/><label>ISBN: </label>246485 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems
<br/><br/><label>Dewey Class. No.: </label>5.44  / CON