TY  - BOOK
AU  - Gray Peter M P
AU  -  Kulkarni Krishnorao
AU  -  Paton Norman W
TI  - Object oriented database: A semantic data model approach
T2  - Prentice- Hall international series in computer science
U1  - D65,8(B):3, N2 
PY  - 1992///
CY  - New York    
PB  -  Prentice- Hall       
KW  -  Database
KW  - Computer science
ER  -