00689nam0-22002411i-450-990002655410403321000265541FED01000265541(Aleph)000265541FED0100026554120000920d1971----km-y0itay50------baENGTechnological forecasting .A pratctical approachby CetronNew YorkGordon and Breach1971Cetron,Marvin J.108649ITUNINARICAUNIMARCBK9900026554104033210-7-53-TI3628ECAECATechnological forecasting .A pratctical approach431297UNINAING01