The Dynamics of Industrial Competition provides the first extensive quantitative examination of the processes associated with competition: entry and exit, mergers, growth and decline of incumbent firms. It uses a unique data base to investigate phenomena that have rarely been measured and even more rarely set side by side so as to provide a comprehensive picture of the intensity of competition and its effects on productivity, efficiency and profitability. It will be of interest to all social scientists who are concerned with the workings of markets--economists, political scientists, government specialists, as well as antitrust lawyers.