Journal Article Equity, Efficiency and Increasing Returns Get access Donald J. Brown, Donald J. Brown Cowles Foundation for Research in Economics at Yale University Search for other works by this author on: Oxford Academic Google Scholar Geoffrey Heal Geoffrey Heal University of Sussex Search for other works by this author on: Oxford Academic Google Scholar The Review of Economic Studies, Volume 46, Issue 4, October 1979, Pages 571–585, https://doi.org/10.2307/2297028 Published: 01 October 1979 Article history Received: 01 July 1978 Accepted: 01 January 1979 Published: 01 October 1979