Frontmatter -- Foreword -- CONTENTS -- TABLES -- Preface by Edward S. Mason -- I. Introduction -- II. A Survey of Market Structures in the American Economy -- III. A Policy for Antitrust Law -- IV. The Policy Applied: Size, Integration, and Mergers, and the Proposed Policy -- V. The Policy Applied: Practices and Per Se Rules, Patents, and Price Discrimination -- VI. Exceptions to Competitive Policy: Regulation and Exemption -- VII. Other Public Policies and the Structure and Functioning of Markets -- VIII. Administration and Enforcement -- Statistical Appendix -- Methodological Appendix -- Index