Sharp John R. <br/><br/>
Information retrieval 
Sharp John R. 
 - London  Andre Deutsch Ltd        1970 
 - 90p.  cm. 
<br/><br/><label>Standard No.: </label>49422 
<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, L0