Van rijsbergen C J. ed <br/><br/>
Research and development in information retrieval 

 - Cambridge  C U P       1984 
<br/><br/><label>Standard No.: </label>7,175 
<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:f, M4 (2D)