Meat-packer Legislation: Hearings Before the Committee on Agriculture, House of Representatives, Sixty-sixth Congress, Second Session, Volúmenes1-12U.S. Government Printing Office, 1920 |
Meat-packer Legislation: Hearings Before the Committee on Agriculture, House of Representatives, Sixty-sixth Congress, Second Session, Volúmenes1-12U.S. Government Printing Office, 1920 |