'The New Institutional Economics is an exciting and active research field, and a comprehensive guide to its achievements and future prospects has been long overdue. This book admirably fills this need. Chapters written by experts in various subfields are complemented by excellent commentaries by Oliver Williamson and the editors. New entrants to the field can use it almost as a textbook; practitioners will use it to reinforce their knowledge and as a great reference tool.' Avinash Dixit, John J. F. Sherrerd '52 University Professor of Economics, Princeton University