TY  - BOOK
AU  - Tsichritzis, Dionysios C.
AU  - Lochovsky, Frederick.
TI  - Data base management systems
T2  - Computer science and applied mathematics series
U1  - 001.6 
PY  - 1977///
CY  - New York
PB  - Academic Press
KW  - Procesamiento automático de datos
ER  -