Lancaster, Frederick Wilfrid. <br/><br/>
Information retrieval systems  : characterístics, testing and evaluation 

 - New York :  Wiley,  1968 
 - 222 p. 
 - Information Sciences series .
 - Information Sciences series .
<br/><br/> 28-76 
<br/><br/><label>LCCN: </label>66465 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sistemas de información.
<br/><br/><label>Dewey Class. No.: </label>021.65  / L35