← Search Journal of Political Economy Vol. 58 No. 4 1950 Vertical Integration and Antitrust Policy Joseph J. Spengler DOI10.1086/256964 Volume58 Issue4 Pages347-352 Languageen 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 ✓