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The subject has been described as concerned with markets that "cannot easily be analyzed using the standard textbook competitive model." Industrial organization adds to the perfectly competitive model such real-world complications as transaction costs, limited information, and barriers to entry of new firms that may be associated with imperfect competition. It analyzes determinants of firm and market organization and behavior as between competition and monopoly, including from government actions.
There are different approaches to the subject. One is descriptive in providing an overview of industrial organization, such as measures of competition and the size-concentration of firms in an industry. A second uses microeconomic models to explain internal firm organization and market strategy. As to strategic firm interaction, non-cooperative game theory has become the standard unifying method of analysis. A third aspect is oriented to public policy as to economic regulation, antitrust law, and, more generally, the economic governance of law in defining property rights, enforcing contracts, and providing organizational infrastructure.
Assessments of the subject have differed over time. The preface to a related research volume in 1972 remarked on Whither industrial organization?: "That all is not well with this in this once flourishing field is readily apparent." A response came 15 years later: "[T]oday's verdict is that industrial organization is alive and well and the queen of applied microeconomics."
The Journal of Economic Literature (JEL) classification codes are one way of representing the range of economics subjects and subareas. There, Industrial Organization, one of 19 primary classifications, has 9 categories. They are listed below with JEL-code links to corresponding available article-preview links of The New Palgrave Dictionary of Economics Online and footnote links to their respective subcategories.
- JEL: L1 – Market Structure, Firm Strategy, and Market Performance
- JEL: L2 – Firm Objectives, Organization, and Behavior
- JEL:L3 – Non-profit organizations and Public enterprise
- JEL: L4 – Antitrust Issues and Policies
- JEL: L5 – Regulation and Industrial policy
- JEL: L6 – Industry Studies: Manufacturing
- JEL: L7 – Industry Studies: Primary Products and Construction
- JEL: L8 – Industry Studies: Services
- JEL: L9 – Industry Studies: Transportation and Utilities
Market structures 
The common market structures studied in this field are the following:
Areas of study 
Industrial organization investigates the outcomes of these market structures in environments with
- Price discrimination
- Product differentiation
- Durable goods
- Experience goods
- Secondary markets, which can affect the behaviour of firms in primary markets.
- Signalling, such as warranties and advertising.
- Mergers and acquisitions
- Entry and Exit
A competitive market structure has the performance outcome of lower costs and lower prices, (Shepherd, W: 1997:4).
The subject has a theoretical side and a practical side. According to one textbook: "On one plane the field is abstract, a set of analytical concepts about competition and monopoly. On a second plane the topic is about real markets, teeming with the excitement and drama of struggles among real firms" (Shepherd, W.; 1985; 1).
The extensive use of game theory in industrial economics has led to the export of this tool to other branches of microeconomics, such as behavioral economics and corporate finance. Industrial organization has also had significant practical impacts on antitrust law and competition policy.
History of the field 
A 2009 book Pioneers of Industrial Organization traces the development of the field from Adam Smith to recent times and includes dozens of short biographies of major figures in Europe and North America who contributed to the growth and development of the discipline.
Other reviews by publication year and earliest available cited works those in 1970/1937, 1972/1933, 1974, 1987/7 from 1968 on, 3 from 1937 to 1956, 2009/c. 1900., and 2010/1951.
See also 
- Bertrand competition
- Bertrand-Edgeworth model
- Competition policy
- Cournot competition
- Input-output model
- Important publications in industrial organization
- • G.C. Archibald, 1987 (2008). "firm, theory of the," The New Palgrave: A Dictionary of Economics, v. 2, pp. 357-63. Keywords.
• Jean Tirole, 1988. The Theory of Industrial Organization. "The Theory of the Firm," pp. 15–60. MIT Press.
• Bengt R. Holmström and John Roberts, 1998. "The Boundaries of the Firm Revisited," Journal of Economic Perspectives, 12(4), pp. 73–94 (close Pages tab).
- Richard Schmalensee, 1987. "Industrial Organization," The New Palgrave: A Dictionary of Economics, v. 2, p. 803.
- • R. H. Coase, 1937. "The Nature of the Firm," Economica, N.S., 4(16), pp. 386–405.
• _____, 1988. "The Nature of the Firm: Influence," Journal of Law, Economics, & Organization, 4(1), pp. 33-47. Reprinted in The Nature of the Firm: Origins, Evolution, and Development, 1993, O. E. Williamson and S, G. Winter, ed., pp. 61-74.
• _____, 1991. "The Institutional Structure of Production," Nobel Lecture, reprinted in 1992, American Economic Review, 82(4), pp. 713-719.
• Oliver E. Williamson, 1981. "The Economics of Organization: The Transaction Cost Approach," American Journal of Sociology, 87(3), pp. 548-577.
• _____, 2009. "Transaction Cost Economics: The Natural Progression," Nobel Lecture. Reprinted in 2010, American Economic Review, 100(3), pp. 673–90.
- George J. Stigler,  2008. "competition," The New Palgrave Dictionary of Economics, 2nd Edition. Abstract.
- • Luigi Zingales, 2008. "corporate governance," The New Palgrave Dictionary of Economics, 2nd Edition. Abstract.
• Oliver E. Williamson, 2002. "The Theory of the Firm as Governance Structure: From Choice to Contract," Journal of Economic Perspectives, 16(3), pp. 171-195.
• Frederic M. Scherer and David Ross, 1990. Industrial Market Structure and Economic Performance, 3rd ed. Description and 1st ed. review extract.
• Dennis W. Carlton and Jeffery M. Perloff, 2004. Modern Industrial Organization, 4th edition, pp. 2-3. Description.
- • Frederic M. Scherer and David Ross, 1990. Industrial Market Structure and Economic Performance, 3rd ed. Description and 1st ed. review extract.
:• Dennis W. Carlton and Jeffery M. Perloff, 2004. Modern Industrial Organization, 4th edition, pp. 2-3. Description.
• Jean Tirole, 1988. The Theory of Industrial Organization, MIT Press. Description, p. 3, and [Part] I, "The Exercise of Monopoly Power."
- • Jean Tirole, 1988. The Theory of Industrial Organization, p. 3 and [Part] II, "Strategic Interaction."
• Drew Fudenberg and Jean Tirole, 1989. "Noncooperative Game Theory for Industrial Organization: An Introduction and Overview," ch. 5, Handbook of Industrial Organization, Elsevier, v. 1, pp. 259-327.
• Carl Shapiro, 1989. "The Theory of Business Strategy," RAND Journal of Economics, 20(1), pp. 125-137.
• Kyle Bagwell and Asher Wolinsky (2002). "Game theory and Industrial Organization," ch. 49, Handbook of Game Theory with Economic Applications, v. 3, pp. 1851-1895.
• Martin Shubik, 1987. A Game-Theoretic Approach to Political Economy, Part II. MIT Press. Description.
- Richard Schmalensee and Robert Willig, eds., 1989. Handbook of Industrial Organization, Elsevier, v. 2, Part 5, Government Intervention in the Marketplace, ch. 22-26, abstract links.
- • Richard A. Posner, 2001. Antitrust Law, 2nd ed. University of Chicago Press. Preview.
• D. L. Rubinfeld, 2001. "Antitrust Policy," International Encyclopedia of the Social & Behavioral Sciences, pp. 553–560. Abstract.
- • Avinash K. Dixit, 2008. "economic governance," The New Palgrave Dictionary of Economics, 2nd Edition. Abstract.
• Oliver E. Williamson, 1996. The Mechanisms of Governance, "Prologue," pp. 3- 20.
- • George J. Stigler, 1983. The Organization of Industry, University of Chicago Press. Description and contents links and preview.
• Richard Schmalensee, 1988. "Industrial Economics: An Overview," Economic Journal, 98(392), pp. 643-681. Working paper link.
• Handbook of Industrial Organization, Elsevier:
- Richard Schmalensee and Robert Willig, ed., 1989. v. 1. Links to description & contents & (partial) chapter outlines.
- _____, ed., 1989. v. 2. Links to description & contents and chapter outlines.
- Mark Armstrong and Robert Porter, ed., 2007. v. 3. Links to description, chapter-content descriptions, chapter outlines, and preview.
- • Edward Hastings Chamberlin, 1933. The Theory of Monopolistic Competition: A Re-orientation of the Theory of Value, 1965, 8th ed. Harvard University Press.
• R. Rothschild, 1987. "The Theory of Monopolistic Competition: E.H. Chamberlin's Influence on Industrial Organisation Theory over Sixty Years," Journal of Economic Studies, 14(1), pp.34-54. Abstract.
• William L. Baldwin, 2007. "Edward Hastings Chamberlin," in Pioneers of Industrial Organization, H. W. de Jong, W. G. Shepherd, ed., pp. 199-.
- Edward S. Mason, 1939. "Price and Production Policies of Large-Scale Enterprise," American Economic Review, 29(1, Supplement), pp. 61-74.
• _____, 1949. "The Current Status of the Monopoly Problem in the United States," 'Harvard Law Review, 62(8), pp. 1265-1285.
• _____, 1957. Economic Concentration and the Monopoly Problem, Harvard University Press. Review extract.
• William G. Shepherd, 2007. "Edward S. Mason," in Pioneers of Industrial Organization, H. W. de Jong, W. G. Shepherd, ed.
- • Joe S. Bain, 1956. Barriers to New Competition: Their Character and Consequences in Manufacturing, Harvard University Press. Review extracts .
• _____, 1959, 2nd ed., 1968. Industrial Organization: A Treatise, John Wiley.
• Richard E. Caves, 2007. "Joe S. Bain," in Pioneers of Industrial Organization, H. W. de Jong, W. G. Shepherd, ed., pp. 224-231.
- E. T. Grether, 1970. "Industrial Organization: Past History and Future Problems," American Economic Review, 60(2), pp. 83-89.
- Oliver E. Williamson, ed., 1990. Industrial Organization, Edward Elgar. Description and article list. 23 articles, dating from 1937 to 1987.
- Victor R. Fuchs, ed., 1972. "Preface" (scrollable down), Policy Issues and Research Opportunities in Industrial Organization, NBER, p. xv.
- Oliver E. Williamson, 1987. "Delimiting Antitrust," Georgetown University Law Review, December 76, p. 303. Reprinted in Williamson (1996), The Mechanisms of Governance, p. 306 (snippet).
- Of which a complete list with Wikipedia links is at JEL classification codes#Industrial organization JEL: L Subcategories.
- JEL: L10 – General
JEL: L11 – Production, Pricing, and Market structure; Size Distribution of Firms
JEL: L12 – Monopoly; Monopolization Strategies
JEL: L13 – Oligopoly and Other Imperfect Markets
JEL: L14 – Transactional Relationships; Contracts and Reputation; Networks
JEL: L15 – Information and Product Quality; Standardization and Compatibility
JEL: L16 – Industrial Organization and Macroeconomics: Industrial Structure and Structural Change; Industrial Price Indices
JEL: L17 - Open Source Products and Markets
- JEL: L20 – General
JEL: L21 – Business Objectives of the Firm
JEL: L22 – Firm Organization and Market Structure
JEL: L23 – Organization of Production
JEL: L24 – Contracting Out; Joint Ventures; Technology licensing
JEL: L25 – Firm Performance: Size, Diversification, and Scope
JEL: L26 – Entrepreneurship
- JEL: L31 – Nonprofit Institutions; NGOs
JEL: L32 – Public enterprises; Public-Private Enterprises
JEL: L33 – Comparison of Public and Private Enterprises; Privatization; Contracting out
- JEL: L40 – General
JEL: L41 – Monopolization; Horizontal Anticompetitive Practices
JEL: L42 – Vertical Restraints; Resale Price Maintenance; Quantity Discounts
JEL: L43 – Legal Monopolies and Regulation or Deregulation
JEL: L44 – Antitrust Policy and Public Enterprise, Nonprofit Institutions, and Professional Organizations
- JEL: L51 – Economics of Regulation
JEL: L52 – Industrial Policy; Sectoral Planning Methods
JEL: L53] – Enterprise Policy
- JEL: L61 – Metals and Metal Products; Cement; Glass; Ceramics
JEL: L62 – Automobiles; Other Transportation Equipment
JEL: L63 – Microelectronics; Computers; Communications Equipment
JEL: L64 – Other Machinery; Business Equipment; Armaments
JEL: L65 – Chemicals; Rubber; Drugs; Biotechnology
JEL: L66 – Food; Beverages; Cosmetics; Tobacco; Wine and Spirits
JEL: L67 – Other Consumer Nondurables: Clothing, Textiles, Shoes, and Leather
JEL: L68 – Appliances; Other Consumer Durables
- JEL: L71 – Mining, Extraction, and Refining: Hydrocarbon Fuels
JEL: L72 – Mining, Extraction, and Refining: Other Nonrenewable Resources
JEL: L73 – Forest Products
JEL: L74 – Construction
JEL: L78 – Government Policy
- JEL: L80 – General
JEL: L81 – Retail and Wholesale Trade; e-Commerce
JEL: L82 – Entertainment; Media (Performing Arts, Visual Arts, Broadcasting, Publishing, etc.)
JEL: L83 – Sports; Gambling; Recreation; Tourism
JEL: L84 – Personal, Professional, and Business Services
JEL: L85 – Real Estate Services
JEL: L86 – Information and Internet Services; Computer Software
JEL: L87 – Postal and Delivery Services
JEL: L88 – Government Policy
- JEL: L91 – Transportation: General
JEL: L92 – Railroads and Other Surface Transportation
JEL: L93 – Air transportation
JEL: L94 – Electric utilities
JEL: L95 – Gas Utilities; Pipelines; Water Utilities
|JEL: L96 – Telecommunications
JEL: L97 – Utilities: General
JEL: L98 – Government Policy
- Henry W. de Jong and William G. Shepherd, ed., 2007. Pioneers of Industrial Organization. Cheltenham, UK: Elgar . Description and content links and preview.
- James W. McKie, 1972. "Industrial Organization: Boxing the Compass," ch. 1 in V. R. Fuchs, ed., Policy Issues and Research Opportunities in Industrial Organization, NBER, pp. 1-15.
- Almarin Phillips and Rodney E. Stevenson, 1974. "The Historical Development of Industrial Organization," History of Political Economy, 6(3), pp. 324-342. In Papers from the First Conference of the History of Economics Society. Citation.
- Timothy F. Bresnahan and Richard Schmalensee, 1987. "The Empirical Renaissance in Industrial Economics: An Overview," Journal of Industrial Economics, 35(4), pp. 371-378.
- Lefteris Tsoulfidis, 2009. "Between Competition and Monopoly," Competing Schools of Economic Thought, ch. 9, pp. 213-42. Springer
- Liran Einav and Jonathan Levin, 2010. "Empirical Industrial Organization: A Progress Report," Journal Of Economic Perspectives, 24(2), pp. 145-162.
- Paul Belleflamme and Martin Peitz, 2010. Industrial Organization: Markets and Strategies. Cambridge University Press. Summary and Resources
- Cabral, Luís M. B., 2000. Introduction to Industrial Organization. MIT Press. Links to Description and chapter-preview links.
- Shepherd, William, 1985. The Economics of Industrial Organization, Prentice-Hall. ISBN 0-13-231481-9
- Shy, Oz, 1995. Industrial Organization: Theory and Applications. Description and chapter-preview links. MIT Press.
- Vives, Xavier, 2001. Oligopoly Pricing: Old Ideas and New Tools. MIT Press. Description and scroll to chapter-preview links.
- Jeffrey Church & Roger Ware, 2005. "Industrial Organization: A Strategic Approach," (aka IOSA)”, Free Textbook
- Nicolas Boccard, 2010. "Industrial Organization, a Contract Based approach (aka IOCB)”, Open Source Textbook
- International Journal of the Economics of Business and issue preview links
- International Journal of Industrial Organization and issue-preview links
- Journal of Industrial Economics, Aims and Scope, and issue-preview links.
- Journal of Law, Economics, and Organization and issue-preview links.
- Review of Industrial Organization and issue-preview links.