CFR›Title 50›Chapter I›Part 20›Subpart A ContainsSections 20.1–20.2CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart A—Introduction Sections 20.1 § 20.1 Scope of regulations. 20.2 § 20.2 Relation to other provisions. Next B Subpart B—Definitions