Knapp;Donna <br/><br/>
A Guide to Help Desk Concepts 

 - USA  Dekker  1990 
 - 424 
<br/><br/><label>ISBN: </label>0-8247-8339-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer--Computer
<br/><br/><label>Dewey Class. No.: </label>620.002  / SAM-C