TY  - BOOK
AU  - Walker, A. 
AU  - McCord, M. Sowa, J.F.
TI  - Knowledge systems and Prolog: developing expert, database, and natural language systems
PY  - 1990///
CY  - Reading
PB  - Addison-Wesley
KW  - Expert systems (Computer science) Prolog (Computer program language)
ER  -