Data and knowledge (DS-2)

de IFIP 2.6 Working Conference on Database Semantics "Data and Knowledge" (2nd 1986 Albufeira, Portugal), Portugal) IFIP 2.6 Working Conference on Database Semantics "Data and Knowledge" (2nd : 1986 : Albufeira, R. Meersman, A. C. Sernadas, John G. Gaschnig