TY  - BOOK
AU  - Hahn,Walter A.
AU  - Gordon,Kenneth F.
ED  - Institute of Management Sciences.
ED  - World Future Society
ED  - United States.
ED  - Conference
TI  - Assessing the future and policy planning
SN  - 0677126506 :
U1  - 309.2082 
PY  - 1973///
CY  - New York
PB  - Gordon and Breach
KW  - Forecastinges
ER  -