Information retrieval research / 
edited by R. N. Oddy, S. E. Robertson, C.J. van Rijsbergen and P. W. Williams 
 - London:  Butterworths,  1981 
 - x, 389 pages : illustrations 
<br/><br/>Includes bibliographical  reference and index 
<br/><br/><label>ISBN: </label>0408107758 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems--Congresses
<br/><br/><label>LC Class. No.: </label>Z 699  / .I5