Great Britain, Simon, J., & Clarke, O. B. (1912). The National insurance act, 1911: Being a treatise on the scheme of national health insurance and insurance against unemployment created by that act. Butterworth & Co..

Great Britain, et al. The National Insurance Act, 1911: Being a Treatise on the Scheme of National Health Insurance and Insurance Against Unemployment Created by That Act. Butterworth & Co., 1912.