2024 CFR > Title 42 > Chapter I > Subchapter M > Part 137 > Subpart B – Definitions

2023 CFR > Title 42 > CHAPTER I > SUBCHAPTER M > PART 137 > Subpart B – Definitions

2022 CFR > Title 42 > Chapter I > Subchapter M > Part 137 > Subpart B – Definitions

2021 CFR > Title 42 > Chapter I > Subchapter M > Part 137 > Subpart B – Definitions

2020 CFR > Title 42 > Chapter I > Subchapter M > Part 137 > Subpart B – Definitions

2019 CFR > Title 42 > Chapter I > Subchapter M > Part 137 > Subpart B – Definitions

2016 CFR > Title 42 > Chapter I > Subchapter M > Part 137 > Subpart B – Definitions

2015 CFR > Title 42 > Chapter I > Subchapter M > Part 137 > Subpart B – Definitions

2014 CFR > Title 42 > Chapter I > Subchapter M > Part 137 > Subpart B – Definitions