00771nam0-22002891i-450-990003063550403321000306355FED01000306355(Aleph)000306355FED0100030635520000920d1968----km-y0itay50------baitaIT<<The >>Economics of Technological ChangeEdwin Mansfield.LondonLongmans\c\\1968.X, 257 p.23 cmG/1.4H/2.11Mansfield,Edwin<1930- >ITUNINARICAUNIMARCBK990003063550403321G/1.4 MAN/69042711SESSESEconomics of Technological Change465404UNINAING01