00788nam0 2200241 450 00001798620081022102244.020081022d1951----km-y0itay50------baengUSa-------001yyCyberneticscircular causal and feedback mechanisms in biological and social systemstransactions of the 7th Conference, March 23-24, 1950, New York (N.Y.)New YorkJosiah Macy Jr. Foundation1951249 p.ill.24 cmCybernetics56625Cibernetica001.5319Foerster,Heinz : VonITUNIPARTHENOPE20081022RICAUNIMARC000017986001.53/10711743NAVA1Cybernetics56625UNIPARTHENOPE