00696nam0-22002411i-450-990002765370403321000276537FED01000276537(Aleph)000276537FED01000276537--------d--------km-y0itay50------baENGConcentration and Prise-cost Margins in Manifacturing Industries.by Collins and Pr estonCollins341947Preston,ITUNINARICAUNIMARCBK9900027653704033215-180tbECAECAConcentration and Prise-cost Margins in Manifacturing Industries424044UNINAING01