L00 - General

L1 - Market Structure, Firm Strategy, and Market Performance

L10 - General

L11 - Production, Pricing, and Market Structure; Size Distribution of Firms

L12 - Monopoly; Monopolization Strategies

L13 - Oligopoly and Other Imperfect Markets

L14 - Transactional Relationships; Contracts and Reputation

L15 - Information and Product Quality

L16 - Industrial Organization and Macroeconomics; Macroeconomic Industrial Structure

L19 - Other 

L2 - Firm Objectives, Organization, and Behavior

L20 - General

L21 - Business Objectives of the Firm

L22 - Firm Organization and Market Structure: Markets vs. Hierarchies; Vertical Integration

L23 - Organization of Production

L29 - Other 

L3 - Nonprofit Organizations and Public Enterprise

L30 - General

L31 - Nonprofit Institutions

L32 - Public Enterprises

L33 - Boundaries of Public and Private Enterprise; Privatization; Contracting Out

L39 - Other 

L4 - Antitrust Policy

L40 - General

L41 - Monopolization; Horizontal Anticompetitive Practices

L42 - Vertical Restraints; Resale Price Maintenance; Quantity Discounts

L43 - Legal Monopolies and Regulation or Deregulation

L44 - Antitrust Policy and Public Enterprise, Nonprofit Institutions, and Professional Organizations

L49 - Other 

L5 - Regulation and Industrial Policy

L50 - General

L51 - Economics of Regulation

L52 - Industrial Policy; Sectoral Planning Methods

L59 - Other 

L6 - Industry Studies: Manufacturing

L60 - General

L61 - Metals and Metal Products; Cement; Glass; Ceramics

L62 - Automobiles; Other Transportation Equipment

L63 - Microelectronics; Computers; Communications Equipment

L64 - Other Machinery; Business Equipment

L65 - Chemicals; Drugs

L66 - Food; Beverages; Cosmetics; Tobacco

L67 - Other Consumer Nondurables: Clothing, Textiles, Shoes, and Leather

L68 - Appliances; Other Consumer Durables

L69 - Other 

L7 - Industry Studies: Primary Products and Construction

L70 - General

L71 - Mining, Extraction, and Refining: Hydrocarbon Fuels

L72 - Mining, Extraction, and Refining: Other Nonrenewable Resources

L73 - Forest Products: Lumber and Paper

L74 - Construction

L79 - Other 

L8 - Industry Studies: Services

L80 - General

L81 - Retail and Wholesale Trade; Warehousing

L82 - Entertainment; Media (Performing Arts, Visual Arts, Broadcasting, Publishing, etc.)

L83 - Sports; Gambling; Recreation; Tourism

L84 - Personal and Professional Services

L85 - Real Estate Services

L86 - Information and Internet Services; Computer Software 

L89 - Other 

L9 - Industry Studies: Transportation and Utilities

L90 - General

L91 - Transportation: General           

L92 - Railroads and Other Surface Transportation: Autos, Buses, Trucks, and Water Carriers

L93 - Air Transportation

L94 - Electric Utilities

L95 - Gas Utilities; Pipelines; Water Utilities

L96 - Telecommunications

L97 - Utilities: General

L98 - Government Policy

L99 - Other