CFR
- Title 1 - General Provisions
- Title 2 - Grants and Agreements
- Title 3 - The President
- Title 4 - Accounts
- Title 5 - Administrative Personnel
- Title 6 - Domestic Security
- Title 7 - Agriculture
- Title 8 - Aliens and Nationality
- Title 9 - Animals and Animal Products
- Title 10 - Energy
- Title 11 - Federal Elections
- Title 12 - Banks and Banking
- Title 13 - Business Credit and Assistance
- Title 14 - Aeronautics and Space
- Title 15 - Commerce and Foreign Trade
- Title 16 - Commercial Practices
- Title 17 - Commodity and Securities Exchanges
- Title 18 - Conservation of Power and Water Resources
- Title 19 - Customs Duties
- Title 20 - Employees' Benefits
- Title 21 - Food and Drugs
- Title 22 - Foreign Relations
- Title 23 - Highways
- Title 24 - Housing and Urban Development
- Title 25 - Indians
- Title 26 - Internal Revenue
- Title 27 - Alcohol, Tobacco Products and Firearms
- Title 28 - Judicial Administration
- Title 29 - Labor
- Title 30 - Mineral Resources
- Title 31 - Money and Finance: Treasury
- Title 32 - National Defense
- Title 33 - Navigation and Navigable Waters
- Title 34 - Education
- Title 35 - Panama Canal
- Title 36 - Parks, Forests, and Public Property
- Title 37 - Patents, Trademarks, and Copyrights
- Title 38 - Pensions, Bonuses, and Veterans' Relief
- Title 39 - Postal Service
- Title 40 - Protection of Environment
- Title 41 - Public Contracts and Property Management
- Title 42 - Public Health
- Title 43 - Public Lands: Interior
- Title 44 - Emergency Management and Assistance
- Title 45 - Public Welfare
- Title 46 - Shipping
- Title 47 - Telecommunication
- Title 48 - Federal Acquisition Regulations System
- Title 49 - Transportation
- Title 50 - Wildlife and Fisheries
PART 49—TRIBAL CLEAN AIR ACT AUTHORITY
- SUBPART A—Tribal Authority (§49.1 to §49.25-49.50)
- SUBPART B—General Provisions (§49.51-49.100 to §49.51-49.100)
- SUBPART C—General Federal Implementation Plan Provisions (§49.101-49.120 to §49.140-49.200)
- SUBPART D—Implementation Plans for Tribes—Region I (§49.201 to §49.202-49.470)
- SUBPART E—Implementation Plans for Tribes—Region II (§49.471 to §49.472-49.680)
- SUBPART F—Implementation Plans for Tribes—Region III (§49.681-49.710 to §49.681-49.710)
- SUBPART G—Implementation Plans for Tribes—Region IV (§49.711-49.920 to §49.711-49.920)
- SUBPART H—Implementation Plans for Tribes—Region V (§49.921-49.1970 to §49.921-49.1970)
- SUBPART I—Implementation Plans for Tribes—Region VI (§49.1971-49.3920 to §49.1971-49.3920)
- SUBPART J—Implementation Plans for Tribes—Region VII (§49.3921-49.4160 to §49.3921-49.4160)
- SUBPART K—Implementation Plans for Tribes—Region VIII (§49.4161-49.5510 to §49.4161-49.5510)
- SUBPART L—Implementation Plans for Tribes—Region IX (§49.5511-49.9860 to §49.5511-49.9860)
- SUBPART M—Implementation Plans for Tribes—Region X (§49.9861 to §49.11111-49.17810)
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