Mathies, M Lorraine <br/><br/>
Computer based reference service 

 - Chicago:   American Library Association,   1973 
 - xiii, 200p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer
<br/><br/><label>Subjects--Index Terms: </label>Reference 
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.3:002  / L3