%0 Journal Article %@ 0034-6535 %A Griffith, R %A Redding, S %A VanReenen, J %D 2004 %F discovery:16510 %I MIT Press %J Review of Economics and Statistics %N 4 %P 883-895 %T Mapping the two faces of R&D: productivity growth in a panel of OECD industries %U https://discovery.ucl.ac.uk/id/eprint/16510/ %V 86