TY  - BOOK
AU  - Gray, Peter
TI  - Logic, algebra, and databases
SN  - 8185095825
U1  - 001.642 GRA 
PY  - 1984///
CY  - Chichester, West Sussex, England 
PB  - : E. Horwood 
KW  -  Database management.
KW  - Prolog (Computer program language)
KW  - Logic, algebra, and databases
KW  - Computer science
KW  - Peter Gray
ER  -