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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
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Title 50
Chapter I
Part 13
Subpart A - Subpart A—Introduction
§ 13.1 - General.
§ 13.2 - Purpose of regulations.
§ 13.3 - Scope of regulations.
§ 13.4 - Emergency variation from requirements.
§ 13.5 - Information collection requirements.
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