David, Paul A. - Stanford Institute for Economic Policy Research … - 2011
The first version of this paper was presented to the Conference on R&D, Education and Productivity, held in Memory of Zvi Griliches (1930 –1999) on 25-27th, August 2003 at Carr? des Sciences, Ministère de la Recherche, Paris, France. Gabriel Goddard furnished characteristically swift and...