Robbins, Judd <br/><br/>
Mastering dos / 
Judd Robbins. 
 - 2nd ed. 
 - Quiapo, Manila :  Pernick Printing,  c1989. 
 - xxvii, 722 pages :   illustrations ;   21 cm 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9715190138 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PC-DOS (Computer file)
<br/><br/><label>LC Class. No.: </label>QA76.76   / R53 1989