TY  - BOOK
AU  - Emery F E Ed.
TI  - Systems thinking :  Selected readings   
T2  - Penguin Modern Management. Ed by D S Pugh
U1  - R1, K9 
PY  - 1969///
CY  - Harmondsworth
PB  - Penguin Books         
KW  - Philosophy-Logic
ER  -