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.