Lancaster, Frederick Wilfrid  <br/><br/>
Information retrieval systems  characteristics, testing, and evaluation 
Frederick Wilfrid Lancaster 
 - 2nd ed. 
 - New York  John Wiley  1968 
 - xviii+381pp  appendix; biblio; figs; index; table 
<br/><br/><label>ISBN: </label>0-471-04673-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information Retrieved Systems
<br/><br/><label>Universal Decimal Class. No.: </label>025.5  / LAN