Journal of Political Economy 1911 19(7), 527-541

Journal of Political Economy 1911 19(5), 361-384

Journal of Political Economy 1910 18(1), 1-33

Journal of Political Economy 1910 18(3), 173-196

Journal of Political Economy 1909 17(9), 589-619

Journal of Political Economy 1909 17(1), 1-18 open access

Journal of Political Economy 1909 17(8), 543-544

Journal of Political Economy 1907 15(7), 385-397

Journal of Political Economy 1907 15(6), 321-344

Journal of Political Economy 1905 13(4), 506-535