Covering industrial market structure, conduct and performance, this textbook gives attention to the theoretical conclusions, empirical findings, and implications for anti-trust, regulatory and patent policies. The 3rd edition has been revised to reflect theoretical, empirical and policy developments of the last decade, and new insights into strategic behaviour from game theory are given prominence. The chapters on anti-trust policy have been integrated with the related theoretical materials, and numerous other new insights provide a basis for industrial organization research of the 1990s.