Elisha A. Pazner; Editors' preface; List of contributors; 1. A perspective Leonid Hurwicz; Part 1. The Surveys: 2. Axioms for social welfare orderings Claude d'Aspremont; 3. Solutions to the bargaining problem Ehud Kalai; 4. Theories of justice based on symmetry William Thomson and Hal R. Varian; 5. Strategy-proofness: the existence of dominant-strategy mechanisms Eitan Muller and Mark A. Satterthwaite; 6. The theory of implementation in Nash equilibrium: a survey Eric S. Maskin; 7. Implementation via Nash equilibria in economic environments Andrew Postlewaite; 8. Bayesian equilibrium and incentive-compatibility: an introduction Roger B. Myerson; 9. The economics of competitive bidding: a selective survey Paul R. Milgrom; Part II. Six Papers by Elisha A. Pazner: 10. A difficulty in the concept of fairness (with David Schmeidler); 11. Recent thinking on economic justice; 12. Social contract theory and ordinal distributive equity (with David Schmeidler); 13. Pitfalls in the theory of fairness; 14. Cheatproofness properties of the plurality rule in large societies (with Eugene Wesley); 15. Egalitarian equivalent allocations: a new concept of economic equity (with David Schmeidler); Author index; Subject index.