Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Industrial organization is a field of economics that studies the strategic behavior of firms, the structure of markets and their interactions. The study of industrial organization adds to the perfectly competitive model real-world frictions such as limited information, transaction cost, cost of adjusting prices, government actions, and barriers to entry by new firms into a market. It then considers how firms are organized and how they compete.Perhaps a most appropriate term is the "Economics of Imperfect Competition." The development of industrial organization as a separate field owed much to Edward Chamberlin, Edward S. Mason and Joe S. Bain.There are two major approaches to the study of industrial organization: the first approach is primarily descriptive and provides an overview of industrial organization. The second, price theory, uses microeconomic models to explain firm behavior and market structure.