00715nam0-22002531i-450-99000124503040332120071218115933.0000124503FED01000124503(Aleph)000124503FED0100012450320001205d1970----km-y0itay50------baengSome network models in management scienceElmaghraby Salah E.BerlinSpringer-Verlag1970VOL.29 ̜Elmaghraby,Salah E.57369ITUNINARICAUNIMARCBK99000124503040332117-M-2910347MA1MA1Some network models in management science381523UNINA