Pieterse, F. <br/><br/>
DOS :   riglyne vir die beginner /  
F. Pieterse. 
 - Johannesburg :  Perskor Opvoedkundige Uitgewery,  ©1989. 
 - 56 pages :  illustrations 
<br/><br/><label>ISBN: </label>0628033249 9780628033246 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)--Handbooks, manuals, etc.
<br/><br/><label>Dewey Class. No.: </label>005.4