TY  - BOOK
AU  - Sagiv Yehoshua C
TI  - Optimization of queries in relational database
T2  - Computer science distribution database systems; 12
U1  - D65,8(B):3:(B2893), M1 
PY  - 1981///
CY  - Aun
PB  - Arbor Umi Research Press      
KW  -  Database
KW  - Computer science
ER  -