In recent years an increasingly common feature in international trade is cases where animporting country finds production practices in exporting countries unacceptable, and whereone seeks to change these practices by imposing trade restrictions. Examples includeunacceptable environmental...

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Aggregation over goods is always an issue in empirical analysis. However, while the problem of aggregation over different goods often is analysed, little attention has been given to the properties of generic goods such as e.g. coffee, wheat and salmon. Often these generic commodities contain a...