Changing patterns in information retrieval : tenth annual national information retrieval colloquium May 3-4, 1973 Philadelphia, Pennsylvania. 
edited by Carol Fenichel. 
 - Washington D.C.:  American Society for Information Science,  1974. 
 - x,175p.;   24cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0877151067 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information retrieval systems--Congresses
<br/><br/><label>Dewey Class. No.: </label>029.7  / CHA