HERTEL WULFF, N. T. H. FARRER. The state in its relation to trade. With supplementary chapter by SIR ROBERT GIFFEN. London 1902. Macmillan & Co. (208 S.). Nationaløkonomisk tidsskrift, [S. l.], v. 3, 1903. Disponível em: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/58400. Acesso em: 15 sep. 2024.