00801nam0-22002891i-450-9900025508704033210471238619000255087FED01000255087(Aleph)000255087FED0100025508720000920d1977----km-y0itay50------baENGActivity NetworksProject Planning and Control by Network ModelsSalah E. Elmaghraby.New YorkJohn Wiley1977.xvii, 443 p.24 cmEconomia, Econometria330Elmaghraby,Salah E.57369ITUNINARICAUNIMARCBK990002550870403321MXX-B-62966MASMASActivity Networks437349UNINAING01