TY  - BOOK
AU  - Codd E F
TI  - Relational model for database management: version 2
SN  - 0201141922 (hbd)
U1  - D65,8(B):35, N0 
PY  - 1990///
CY  - Reading, Massachusetts 
PB  - Addison-Wesley Publishing Company
KW  -  Databases
KW  -  Relational
KW  - Computer science
N1  - Bibliographical references 505-510p; Index 511-538p
ER  -