This paper considers the conversion of import quotas into tariffs, as may arise in the current round of General Agreement on Tariffs and Trade (GATT) negotiations, when the internal market of the country imposing the quota is not perfectly competitive. This case is illustrated by the chicken...

This paper analyzes U.S. countervailing import duties aimed at offsetting the effects of a Canadian hog production subsidy. Approximate countervailing duty formulae for two alternative objectives are derived, the permissible range of these duties is illustrated, and empirical evidence is...