00863nam0-22002891i-450-99000391813040332120030916131202.00-677126506000391813FED01000391813(Aleph)000391813FED0100039181320030910d1973----km-y0itay50------baengGBAssessing the future and policy planningWalter A. Hahn and Kenneth F. GordonNew York ; London ; ParisGordon and Breach science publishers1973345 p.22 cmHahn,Walter A.147601Gordon,Kenneth F.147602ITUNINARICAUNIMARCBK990003918130403321A02.725785DECTSDECTSAssessing the future and policy planning515970UNINA