Townley, Helen M <br/><br/>
Systems analysis for information retrieval 
Helen M Townley 
 - London:  Andre Deutsch,  1978. 
 -  xiv,121p. 
<br/><br/> Hardcover 
<br/><br/>Includes index 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>0233969209 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information science
<br/><br/><label>Dewey Class. No.: </label>025.524  / TOS