Contents: Foreword Preface 1. Introduction 2. The Marxian Notion of a Monetary Economy and the Critique of Say's Law 3. General Overproduction Crises 4. Keynes's Critique of Say's Law 5. Keynesian Underemployment Equilibria 6. A Critique of Keynes's Microfoundations 7. Kaleckian Macroeconomics: An Outline 8. The Problem of Market Forms in Modern Macroeconomics 9. Concluding Remarks A. A Formalization of Marx's Schemes of Reproduction B. Effects of Wage Changes in Keynes's Model C. Price Determination and Income Distribution in Kalecki