TY  - BOOK
AU  - Jackson,Mary
TI  - Understanding expert systems : using crystal
SN  - 0471935808
U1  - QA/76.76.E95 
PY  - 1992///
CY  - Chichester
PB  - John Wiley & Sons
KW  - Expert systems (Computer science)
N1  - Notes Registration no: 25340 and 25341
ER  -