Lancaster, F Wilfrid  <br/><br/>
Information retrieval systems:   Characteristics, testing and evaluation  

 - 2nd Ed.  
 - New York:   John Wiley & Sons, Inc.   1968 
 - xviii, 381p.  
<br/><br/><label>ISBN: </label>0-471-04673-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science 
<br/><br/><label>Subjects--Index Terms: </label>Informal communication  Information service  
<br/><br/><label>Universal Decimal Class. No.: </label>D 002   / L9