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U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 166Subpart A - Subpart A—General Provisions
§ 166.1 - Purpose and organization.
§ 166.2 - Types of exemptions.
§ 166.3 - Definitions.
§ 166.7 - User notification; advertising.
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