Determinants of Firm and Market Organization. Technological determinants of firm and industry structure (J.C. Panzar). The theory of the firm (B.R. Holmstrom, J. Tirole). Transaction cost economics (O.E. Williamson). Vertical integration: Determinants and effects (M.K. Perry). Analysis of Market Behavior. Noncooperative game theory for industrial organization: An introduction and overview (D. Fudenberg, J. Tirole). Theories of oligopoly behavior (C. Shapiro). Cartels, collusion, and horizontal merger (A. Jacquemin, M.E. Slade). Mobility barriers and the value of incumbency (R.J. Gilbert). Predation, monopolization, and antitrust (J.A. Ordover, G. Saloner). Price discrimination (H.R. Varian). Vertical contractual relations (M.L. Katz). Product differentiation (B.C. Eaton, R.G. Lipsey). Imperfect information in the product market (J. Stiglitz). The timing of innovation: Research, development, and diffusion (J.F. Reinganum). The theory and the facts of how markets clear: Is industrial organization valuable for understanding macroeconomics? (D.W. Carlton).