TY  - BOOK
AU  - Date, C.J
TI  - Introduction to database systems: vol.1 
SN  - 81-85015-58-9
U1  - 005.74 
PY  - 1975///
CY  - New Delhi
PB  - Narosa Publishing House
KW  - Computer science
N1  - Includes index
ER  -