Rijsbergen C J Van Ed. <br/><br/>
Research and development in information retrieval 
by Rijsbergen C J Van Ed. 
 -  1984 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>77468 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D65,8(2:55), M4