Schildt, Herbert. <br/><br/>
DOS 4 made easy / 
Herbert Schildt. 
 - Berkeley, Calif. :  Osborne McGraw-Hill,  c1988. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0078814480 (pbk.) 
<br/><br/><label>LCCN: </label>89110986  
<br/><br/><label>Subjects--Uniform Titles: </label><br/>DOS 4.0.
<br/><br/><label>Dewey Class. No.: </label>001.642  / SCH