New edition with an introduction by Roger Garrison and an index. Booms and busts are not endemic to the free market, argues the Austrian theory of the business cycle, but come about through manipulation of money and credit by central banks. In this monograph, Austrian giants explain and defend the theory against alternatives. Includes essays by Mises, Rothbard, Haberler, and Hayek. In his later years, Professor Haberler distributed many of these monographs to friends and associates.