Lancaster, F. Wilfrid  1933- <br/><br/>
Information retrieval :  on-line / 
by F. W. Lancaster and E. G. Fayen. 
 - Los Angeles :  Melville Publishing,  1973. 
 - xiv, 597 p. :  ill. ;  23 cm. 
<br/><br/> 'A Wiley Becker & Hayes series book.' 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0471512354 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information retrieval.<br/>Data base searching.