"Vickery, B. C." <br/><br/>
On retrieval system theory 

 - 2nd ed. 
 - London  Butter Worths  1965 
 - 191p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval
<br/><br/><label>Dewey Class. No.: </label>025.04 VIC