Vickery B C. <br/><br/>
On retrieval system theory 

 - 2nd 
 -  1965 
<br/><br/><label>Standard No.: </label>6,957 
<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, K57-;1 (2D)