Information retrieval research 

 - London:   Butterworths,   1981 
 - x, 389p. 
<br/><br/><label>ISBN: </label>0-408-10775-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems
<br/><br/><label>Subjects--Index Terms: </label>Information retrieval 
<br/><br/><label>Universal Decimal Class. No.: </label>D 002:681.3].001.5(082.2)  / M1