Beck, L.L. <br/><br/>
System software: An introductions Pro. 
By  L.L. Beck 
 - NULL 
 - NULL  Pearson, Edu Asia.  NULL 
 - NULL 
<br/><br/> Engineering 
<br/><br/><label>ISBN: </label>NULL 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer & IT