← Search Econometrica Vol. 38 No. 5 1970 A Production Model for Wheat and Feedgrains in France (1946-1961) Richard H. Day; Bernard Oury DOI10.2307/1912214 Volume38 Issue5 Pages785 Sources semanticscholar openalex crossref Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓