Peter Norton's DOS guide / 
Norton, Peter, 
 - Rev. & expanded. 
 - New York, N.Y. :  Brady : | Distributed by Prentice Hall Trade,  1987 
 - xvi, 350, 1 p. ;  24 cm. 
<br/><br/> Rev. ed. of: MS-DOS and PC-DOS. 1st ed. c1984. | Includes index. 
<br/><br/><label>ISBN: </label>8769259310 | 0136620736 (pbk.) :