Petroleum. Regulating importation of petroleum and related products, hearings, 71st Congress, 3d session, on S. J. Res. 238, to regulate commerce between United States and foreign countries in petroleum, crude, fuel, or refined, and all distillates obtained from petroleum, including kerosene, benzene, naphtha, gasoline, paraffin oil, and S. 5818. to regulate commerce between United States and foreign countries in crude petroleum and all products of petroleum, including fuel oil, and to limit importation thereof, Jan. 29-Feb. 3, 1931.