Williams, Al.. , <br/><br/>
Dos 6, a developer's guide :  advanced programming guide to dos / 
Al Williams. 
<br/><br/> Rev. edition of : DOS 5, a developer's guide. 1991 
<br/><br/><label>ISBN: </label>1558513094 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MS -DOS (Computer file ).<br/>PC - DOS (Computer file).
<br/><br/><label>LC Class. No.: </label>QA76.76.O63   / .55 1993