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Rev. Proc. 90-63, 1990-2 C.B. 664, is

Internal Revenue Bulletin 1997-33 · 2026-10-03 edition · updated 2026-10-04 · United States

modified, and as modified, is superseded. However, see the transition rules in section 13.02 of Rev. Proc. 97-37.

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▸Contents — Internal Revenue Bulletin 1997-33
Internal Revenue Bulletin 1997-33

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