Contributors: D.W. Allen, K.J. Arrow, B. Arruñada, Y. Barzel, E. Bertrand, R.R.W. Brooks, J.N. Drobak, G.W. Evans, W. Farnsworth, J. Farrell, K. Foss, N.J. Foss, R.F. Freeland, J. Groenewegen,R. Guesnerie, F. Gul, T.W. Hazlett, P.G. Klein, G.D. Libecap, S.G. Medema, C. Ménard, M.W. Moszoro, J.H. Mulherin, J.V.C. Nye, S. Pratten, M.M. Shirley, P.T. Spiller, J. Thomas, P. de Vries, N. Wang, O.E. Williamson