Microsoft Corporation - <br/><br/>
User's Guide Microsoft MS-DOS UpGrade Opeating system 

 - NA 
 - California  1994 
 - xxv,317 
<br/><br/><label>ISBN: </label>NA 
<br/><br/><label>Subjects--Personal Names: </label><br/>Computer Science
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science, information & general works