Information processing 89 /Proceeding of the IFIP 11th world computer congress, San Francisco, USA August 28-September 1 ,1989 - Amsterdam: North-Holland, 1989 - 1193p. ISBN: 0-444-88015-1 Subjects--Topical Terms: Information Subjects--Index Terms: Computer Universal Decimal Class. No.: D 681.3.01(082.2) / M9