00930nam a22002051a 4500 1/17331 010716s1991 enk eng d 0444889418 17852 DLC GR-PeUP 005.75'6 EN International Conference on Entity-Relationship Approach. (9th : 1990 : Lausanne, Switzerland) Entity-relationship approach, the core of conceptual modelling : proceedings of the Ninth International Conference on the Entity-Relationship Approach, Lausanne, Switzerland, 8-10 October, 1990 / edited by Hannu Kangassalo. Amsterdam : North-Holland, 1991. ix, 497 p. : ill. ; 24 cm. Includes bibliographical references & index Relational data bases. Database design Congress. Kangassalo, Hannu, ed. INST UNIPILB MAIN 20040709 005.75'6 EN 00136514 00136514 LOAN 0 1