TY  - BOOK
AU  - Rich, Elaine  .
AU  - Knight,Kevin  .
TI  - Artificial intelligence / 
SN  - 0-07-052263-4
U1  - 006.3 
PY  - 1991///
CY  - New Delhi : 
PB  - Tata Mc-Graw Hill Publishing Company , 
ER  -