Van Rijsbergen . C .J <br/><br/>
Information Retrival 

 - 2nd 
 - Great Britain  Butterworth & Co Publishers Ltd  1979 
 - ix , 208p :ill  Hbk 
<br/><br/><label>ISBN: </label>0408709294 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems
<br/><br/><label>LC Class. No.: </label>Z 699 . V3 1979