2024 CFR > Title 40 > Chapter I > Subchapter C > Part 81 > Subpart A – Meaning of Terms

2023 CFR > Title 40 > CHAPTER I > SUBCHAPTER C > PART 81 > Subpart A – Meaning of Terms

2022 CFR > Title 40 > Chapter I > Subchapter C > Part 81 > Subpart A – Meaning of Terms

2021 CFR > Title 40 > Chapter I > Subchapter C > Part 81 > Subpart A – Meaning of Terms

2015 CFR > Title 40 > Chapter I > Subchapter C > Part 81 > Subpart A – Meaning of Terms

2014 CFR > Title 40 > Chapter I > Subchapter C > Part 81 > Subpart A – Meaning of Terms