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.). nt [Internet]. 1. januar 1903 [henvist 12. august 2024];3. Tilgængelig hos: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/58400