Curtin, Dennis P. <br/><br/>
DOS 4 :  a complete course / 
by Dennis P. Curtin. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1990. 
 - xiii, 353 p. 
 - Computer Application Software Series. .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0132190648 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DOS 4 (Computer operating system).