Iron in pigs Report of the United States Tariff Commission to the President of the United States. Differences in costs of production of iron in pigs in the United States and in the principal competing country, as ascertained pursuant to the provisions of section 315 of title III of the Tariff Act of 1922. With appendix: Proclamation by the President

"Iron in pigs : Report of the United States Tariff Commission to the President of the United States. Differences in costs of production of iron in pigs in the United States and in the principal competing country, as ascertained pursuant to the provisions of section 315 of title III of the Tariff Act of 1922. With appendix: Proclamation by the President"
"Iron in pigs Report of the United States Tariff Commission to the President of the United States. Differences in costs of production of iron in pigs in the United States and in the principal competing country, as ascertained pursuant to the provisions of section 315 of title III of the Tariff Act of 1922. With appendix: Proclamation by the President"@en
"Iron in pigs : report of the United States Tariff Commission to the President of the United States : differences in costs of production of iron in pigs in the United States and in the principal competing country, as ascertained pursuant to the provisions of section 315 of title III of the Tariff Act of 1922 : with appendix, proclamation by the President"