Economics of informatics :  proceedings of the IBI-ICC international symposium Mainz, 16-20 sep.1974 / 
edited by A. B. Frielink 
 - Amsterdam :  North-Holland Publishing Company,  1975 
 - 469 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>0444108483 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public administration--Data processing--Economic aspects--Congresses<br/>Electronic data processing--Cost effectiveness--Congresses<br/>Information storage and retrieval systems--Economic aspects--Congresses