TY  - BOOK
AU  - Dayal Ram
TI  - Integreted systems of world models :  With separate   
T2  - Noth Holland Systems And Control Series.2
U1  - X:(B).1.N7, M1 
PY  - 1981///
CY  - Amsterdam
PB  - North Holland Publisher        
KW  - Mathametical Economics
ER  -