Section was formerly classified to section
228a of this title.
Provisions similar to those in this section were carried in the following prior Department of Agriculture Appropriation Acts:
June 30, 1939, ch. 253, title I,
53 Stat. 948.
June 16, 1938, ch. 464, title I,
52 Stat. 719.
Appropriations of funds necessary to accomplish the purpose of this section, see note under section
395 of this title.