TY  - BOOK
AU  - Gray,Peter
TI  - Logic and Algebra Databases
SN  - 8185095825
U1  - 001.6 
PY  - 1988///
CY  - New Delhi: 
PB  - Affiliated Eastwest press, 
KW  - Algebra
KW  - Calculus
KW  - Computer Science
KW  - Relation Model
ER  -