Meetham, Roger. <br/><br/>
Information retrieval :  the essential technology / 
Roger Meetham. 
 - Garden City, N.Y. :  Doubleday,  1970. 
 - 192 p. :  ill. (part col.), facsim., map. ;  23 cm. 
<br/><br/>Bibliography: p. 188. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information retrieval.<br/>Information technology.<br/>Libraries--Automation.