00687nam0-22002411i-450-990002800710403321000280071FED01000280071(Aleph)000280071FED0100028007120000920d1975----km-y0itay50------baENGManagerial economics and operations research.by Mansfield E.New YorkNorton1975.Mansfield,Edwin<1930- >1288ITUNINARICAUNIMARCBK9900028007104033211-5-123TIC 4157ECAECAManagerial economics and operations research422292UNINAING01