TY  - BOOK
AU  - Post, Gervald V
TI  - Dtabase management systems 
SN  - 0 07 060745 1
U1  - 005.74 P857d 2005 
PY  - 2005///
CY  - New Delhi: 
PB  - Tata Mc Graw-Hill Publishing Company Limited, 
ER  -