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Liebenau, Jonathan (2013) Modernising the business of health: pharmaceuticals in Britain, in comparison with Germany and the United States, 1890-1940. Industrial and Corporate Change, 22 (3). pp. 807-847. ISSN 0960-6491
Varian , Brian (2014) American tariff policy and the British alkali industry, 1880-1905. Economic History Working Paper Series , 189/2014. The London School of Economics and Political Science, London, UK.