Van Rijsbergen C J Van. <br/><br/>
Information retrieval 
Van Rijsbergen C J Van. 
 - London  Butterworths         1975 
 - 152p,illus Bibliography  cm. 
<br/><br/><label>Standard No.: </label>6,993 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBRARY SCIENCE
<br/><br/><label>Dewey Class. No.: </label>2:97, L51-;1 (2)