The international directory of computer and information system services, 1969 

 - London :  Europa Publications,  1969 
 - 337 p 
<br/><br/><label>LCCN: </label>25942 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Servicios de información.
<br/><br/><label>Dewey Class. No.: </label>658.403  / I5 1969