Norton, Peter <br/><br/>
Peter Norton's DOS guide 

 - rev. enl. ed. 
 - Delhi: Prentice-Hall  1989 
 - xvi,350p.  23 cm. 
<br/><br/><label>ISBN: </label>08769259310 
<br/><br/><label>Dewey Class. No.: </label>001.6424P.;nor  / _