Spillovers, Linkages, and Productivity Growth in the US Economy, 1958 to 2007
NBER Working Paper No. 16864
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An earlier version of this paper was presented at the CESIS Workshop on Innovation and Productivity, “Spillovers, Linkages, and Productivity Growth in the US Economy, 1947 to 2007,” Vienna University of Economics and Business, Vienna, Austria, April 6-8, 2010. The views expressed herein are those of the author and do not necessarily reflect the views of the National Bureau of Economic Research.