Oleomargarine, hearing before Committee on Agriculture and Forestry, 57th Congress, on H. 9206, to make oleomargarine and other imitation dairy products subject to laws of any State or Territory or District of Columbia into which they are transported, and to change tax on oleomargarine, and to amend act defining butter, also imposing tax upon and regulating manufacture, sale, importation, and exportation of oleomargarine.