TY - JOUR VL - 86 SP - 883 A1 - Griffith, R A1 - Redding, S A1 - VanReenen, J PB - MIT Press JF - Review of Economics and Statistics TI - Mapping the two faces of R&D: productivity growth in a panel of OECD industries SN - 0034-6535 Y1 - 2004/// AV - public IS - 4 UR - https://discovery.ucl.ac.uk/id/eprint/16510/ ID - discovery16510 EP - 895 ER -