Information systems :  their interconnection and compatibility : proceedings of a Symposium on Information Systems : Connection and Compatibility, Varna, Bulgaria, 30 September-3 October 1974 / 
organized by the International Atomic Energy Agency and co-sponsored by the Food and Agriculture Organization of the United Nations and the United Nations Educational, Scientific and Cultural Organization 
 - Vienna :  IAEA,  1975 
 - 470 p. :  ill. ;  24 cm. 
 - Proceedings series (International Atomic Energy Agency) .
 - Proceedings series (International Atomic Energy Agency) .
<br/><br/> English, French, or Russian; abstracts in English. 
<br/><br/><label>ISBN: </label>9200700756 
<br/><br/><label>LCCN: </label>75-316264 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems--Science--Congresses<br/>Information services--International cooperation--Congresses<br/>Communication in science--Congresses