Rev. Proc. 77-37, 1977-2 C.B. 568, as amplified by Rev. Proc. 77-41, 1977-2 C.B. 574,…
Internal Revenue Bulletin 2025-1 · 2026-10-03 edition · updated 2026-10-04 · United States
Proc. 83-81, 1983-2 C.B. 598, and as modified by Rev. Proc. 89-30, 1989-1 C.B. 895 ( see also Rev. Proc. 2025-3, this Bulletin); Rev. Proc. 84-42, 1984-1 C.B. 521; Rev. Proc. 86-42, 1986-2 C.B. 722; Rev. Proc. 89-50, 1989-2 C.B. 631; Rev. Proc. 2017-52, 2017-41 I.R.B. 283; and Rev. Proc. 2024-24, 2024-21 I.R.B. 1214.
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