Miller, Allan R. <br/><br/>
The ABC's of DOS 4 / 
Alan R. Miller. 
 - San Franciso :  Sybex,  1989. 
 - xx, 275 p. 
<br/><br/> "An earlier version of this book was published under the title ABC's of PC-DOS, copyright 1987"--t.p. Verso.  On t.p. the registered trademark symbol "R" is superscript following "DOS 4" in the title. 
<br/><br/><label>ISBN: </label>0895885832 
<br/><br/><label>LCCN: </label>90074032     
<br/><br/><label>Subjects--Topical Terms: </label><br/>DOS 4 (Computer operating system)