TY  - BOOK
AU  - Gray Paul Ed.
AU  -  Yuanzhang Liu Ed.
ED  - Chinese-US symposium on systems analysis (1981 : Xian)
TI  - Proceedings of the chinese-US symposium on systems analysis
U1  - X:89Mp1,N81, M3 
PY  - 1983///
CY  - New York    
PB  -  John Wiley       
ER  -