TY  - BOOK
AU  - PETER M. D. GRAY
TI  - LOGIC, ALGEBRA AND DATABASES
SN  - 81-85095-82-5
U1  - 001.6425/GRA/LOG 
PY  - 1988///
CY  - New Delhi
PB  - AFFILIATED EAST WEST PRESS
KW  - COMPUTER
ER  -