Chapter 7: Workingmen, footnote 144, page 314 Ch7 fn. 144 p. 314 Tags: Scholarly Articles, Ideology John Bates Clark, "Possibility of a Scientific Law of Wages," Publications of the American Economic Association 4 (March 1889): 39-69. quote in John Bates Clark, "Universal Law of Economic Variation," Quarterly Journal of Economics (April 1894): 261.