MS-DOS reference manual, version 3.10 for the Model "D". 

 - 4th ed 
 - Canton, MA :  Lading Edge Hardware Products,  c1986. 
 - 1 v. (various pagings) 
<br/><br/> Includes appendices and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MS-DOS (Computer file)