TY  - BOOK
AU  - Gray,Peter M.D.
TI  - Logic, algebraand databases
U1  - 001.642 
PY  - 1984///
CY  - New Delhi
PB  - Attiliated East-West Press
KW  - Database management
KW  - Prolog (Computer program language)
KW  - Computer programming
KW  - Algebra
KW  - Logic, Symbolic and mathematical
N1  - Includes index
ER  -