00836nam0-22002891i-450-9900025726604033210120855658000257266FED01000257266(Aleph)000257266FED0100025726620000920d1977----km-y0itay50------baENGModels for Public Systems AnalysisE. J. Beltrami.New YorkAcademic Press1977.xv, 218 p.24 cmRicerca operativa e programmazione, Ricerca operativateoria generale658Beltrami,Edward J.26772ITUNINARICAUNIMARCBK990002572660403321MXVIII-A-403378MASMASModels for Public Systems Analysis435780UNINAING01