Section, acts June 7, 1924, ch. 348, § 3,
43 Stat. 653; May 5, 1944, ch. 189,
58 Stat. 216; May 5, 1972,
Pub. L. 92–288, § 3(a),
86 Stat. 134, authorized expenditures by the Secretary of Agriculture for study of effects of tax and other laws on forest perpetuation, etc.