TY  - BOOK
AU  - Kangassalo, Hannu ed.
TI  - Entity-relationship approach : the core of conceptual modelling
PY  - 1991///
CY  - AmsterdamNL
PB  - North-Holland
N2  - Addresses four major themes viz. knowledge presentation; conceptual modelling and database design; new approaches in database management systems and in information systems; and innovative theories and applications
ER  -