← Search Econometrica Vol. 15 No. 1 1947 Technological Change and Aggregation Kenneth May DOI10.2307/1905816 Volume15 Issue1 Pages51 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 ✓