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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
All Titles
Title 21
Chapter I
Part 111
Subpart A - Subpart A—General Provisions
§ 111.1 - Who is subject to this part?
§ 111.3 - What definitions apply to this part?
§ 111.5 - Do other statutory provisions and regulations apply?
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