Van Rijsbergen, C. J. <br/><br/>
Information retrieval 
C. J. van Rijsbergen 
 - 2nd 
 - London:  Butterworth,  1979. 
 - ix,208p. 
<br/><br/> Includes bibliography and index 
<br/><br/><label>ISBN: </label>0408709294 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval system
<br/><br/><label>Dewey Class. No.: </label>029.7  / VAI