TY  - BOOK
AU  - Frantz Roger S
TI  - X-efficiency: Theory evidance and applications   
SN  - 0898382424
U1  - X:7, M8 
PY  - 1988///
CY  - Boston
PB  - Klywer Academic Publishers        
KW  - Value
N1  - Bibliography P 211-19
ER  -