Transactions often differ on important dimensions from spot exchanges on perfect neo-classical markets. Information is seldom complete and instantaneous exchange is just as rare as full competition. The authors in this volume extend the standard economic model stressing the proposition that the social context is an important determinant of the governance of transactions. To foster the development of a body of cumulative knowledge in the new economic sociology, this approach is consistently applied to a diversity of topics including purchase relations, strategic alliances, and relations among...