Code of Federal Regulations
[Sec. 154 as amended by sec. 103(c)(2), Foreign Investors Tax Act 1966 (80 Stat. 1551)]
Code of Federal Regulations
[TD 6500, 25 FR 11402, Nov. 26, 1960; 25 FR 14021, Dec. 21, 1960, as amended by T.D. 7332, 39 FR 44216, Dec. 23, 1974]