Ashley, Ruth <br/><br/>
DOS :  self-teaching guide / 
Ruth Ashley, Judi N. Fernandez 
 - New York :  John Wiley & Sons,  1993 
 - xxi, 378 p. :  ill. ;  24 cm. 
 - Self-teaching guide .
<br/><br/> 'Covers Versions 5 and 6'--Cover  Includes index. 
<br/><br/><label>ISBN: </label>0471590746 
<br/><br/><label>LCCN: </label>93-012394 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>MS-DOS (Computer file)<br/>PC-DOS (Computer file)
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)