. . . . . "Butter : report of the United States Tariff Commission to the President of the United States : investigation of the costs of production in the United States and in the principal competing foreign country of butter : with appendix, proclamation by the President" . . . . "Butter ; report of the United States Tariff Commission to the President of the United States ; investigation of the costs of production in the United States and in the principal competing foreign countries of butter ; with appendix: Proclamation by the President" . . "Butter Report of the United States Tariff Commission to the President of the United States ... With appendix: Proclamation by the President"@en . . . . . . . . . .