2024 CFR > Title 50 > Chapter IV > Subchapter A

2023 CFR > Title 50 > CHAPTER IV > SUBCHAPTER A

2022 CFR > Title 50 > Chapter IV > Subchapter A – Subchapter A

2021 CFR > Title 50 > Chapter IV > Subchapter a – Subchapter a

2014 CFR > Title 50 > Chapter IV > Subchapter A