Norton, Peter, <br/><br/>
Peter Norton's DOS 5.0 guide / 
Peter Norton. 
 - 4th ed. 
 - New York :  Brady,  c1991. 
 - xiv, 498 p. :  ill. ; 
<br/><br/> Rev. ed. of: Peter Norton's DOS guide. 3rd ed. c1989.  Includes index. 
<br/><br/><label>ISBN: </label>0136630480 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)
<br/><br/><label>LC Class. No.: </label>QA76.76.O63  / N68 1991