Labour.The statistical method in economics and political science : a treatise on the quantitative and institutional approach to social and industrial problems.Economics and sociology of industry : a realistic analysis of development /Ownership, control and success of large companies : an analysis of English industrial structure and policy 1936-1951 /Industry and the state /Investment, location, and size of plant : a realistic inquiry into the structure of British and American industries /The logic of British and American industry : a realistic analysis of economic structure and government /Post-war investment, location and size of plant /