00674nam0-22002531i-450-990003029660403321000302966FED01000302966(Aleph)000302966FED0100030296620000920d--------km-y0itay50------baitaITCollective Efficiency and Increasing ReturnsHubert SchmitzIDS working papers50Schmitz,HubertITUNINARICAUNIMARCBK990003029660403321PaperSESSESCollective Efficiency and Increasing Returns464126UNINAING01