TY  - GEN
AU  - Mittra Sitansu S
TI  - Principles of relational database systems
SN  - 0137386184
AV  - QA76.9.D3 
U1  - 005.75/6 
PY  - 1991///
CY  - Englewood Cliffs, N.J.
PB  - Prentice Hall
KW  - Relational databases
N1  - Includes bibliographical references and index
ER  -