Journal Article Traded and Nontraded Intermediate Inputs and Some Aspects of the Pure Theory of International Trade Get access Alok Ray Alok Ray Indian Institute of Management, Calcutta Search for other works by this author on: Oxford Academic Google Scholar The Quarterly Journal of Economics, Volume 89, Issue 2, May 1975, Pages 331–340, https://doi.org/10.2307/1884439 Published: 01 May 1975