Robertson, S.E. <br/><br/>
Information Retrieval Research 

 - London :  Butterworths,  1981. 
 - x,389p.;  24cm 
<br/><br/><label>ISBN: </label>0408107758 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library Science<br/>Information Science
<br/><br/><label>Dewey Class. No.: </label>025.524  / INF