Invention in the Industrial Research Laboratory D. Hamberg Journal of Political Economy 1963 71(2), 95-115
Total Productivity and the Quality of Capital Evsey D. Domar Journal of Political Economy 1963 71(6), 586-588
North Atlantic Policy--The Agricultural Gap. John O. Coppock D. Gale Johnson Journal of Political Economy 1963 71(6), 608-609