Microsoft MS-DOS version 5.0 :  Getting started. 

 - St. Joseph, Mich. :  Zenith Data Systems,  c1991. 
 - 1 v. (various pagings) ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>LCCN: </label>92112422  
<br/><br/><label>Subjects--Uniform Titles: </label><br/>MS-DOS (Computer file)
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)
<br/><br/><label>LC Class. No.: </label>QA76.76.O63  / M48918 1991 
<br/><br/><label>Dewey Class. No.: </label>055.4/46