'Economists associate the Austrian school with the free market classical liberal ideas of Ludwig von Mises and Friedrich Hayek, Professor King describes the ideas of another group of Austrian economists: Marxists who were active in Vienna in the early twentieth century, and later Austro-Marxists who built on their work. King's book is a delightful description of this intellectual community, and explains how their work was designed to be an extension and updating of Marx's ideas.'--Randall G. Holcombe, Florida State University, US