Mathematical investigations in the theory of value and prices. By Dr. Irving Fisher. Fisher, Irving 1867-1947. Economics, Mathematical. Q11 .C9 vol. 9 330.16 FIM (In Connecticut Academy of Arts and Sciences. Transactions. New Haven, 1892-95. 25 cm. v. 9, p. [1]-124. illus.) "The following memoir is in substance the writer's thesis for the degree of Ph. D. at Yale University, 1891." "Bibliography of mathematico-economic writings": p. 120-124. New Haven : Yale University Press, 1992. 1992. 1892 Text xii, 126 p. eng