Chapter I — United States Fish and Wildlife Service, Department of the Interior
- Subch. A General Provisions §§1.1 to 3.3
- Subch. B Taking, Possession, Transportation, Sale, Purchase, Barter, Exportation, and Importation of Wildlife and Plants §§10.1 to 24.12
- Subch. C The National Wildlife Refuge System §§25.11 to 38.17
- Subch. D Subchapter D [reserved]
- Subch. E Management of Fisheries Conservation Areas §§70.1 to 71.12
- Subch. F Financial Assistance—wildlife and Sport Fish Restoration Program §§80.1 to 86.110
- Subch. G Miscellaneous Provisions §§90.1 to 92.33-92.39
- Subch. H Subchapter H [reserved]