TY  - BOOK
TI  - System analysis :  selected readings edited by Standford L Optner
T2  - Penguin modern management readings edited by D S Pugh
U1  - X:89Mz7, L3 (2D) 
PY  - 1973///
CY  - London
PB  - Penguin       
KW  - ECONOMICS
ER  -