TY  - BOOK
AU  - Ullman,Jeffrey D.
TI  - Principles of database and knowledge-base systems
SN  - 071678162X
AV  - QA76.9.D3 U443 1989
CY  - New York
PB  - Computer Science Press,1989
KW  - Database management
KW  - Expert systems (Computer science)
N1  - Includes bibliographical references and indexes
ER  -