2024 CFR > Title 32 > Subtitle A > Chapter I > Subchapter L – Environment

2023 CFR > Title 32 > Subtitle A > CHAPTER I > SUBCHAPTER L – ENVIRONMENT

2022 CFR > Title 32 > Subtitle A > Chapter I > Subchapter L – Environment

2021 CFR > Title 32 > Subtitle A > Chapter I > Subchapter L – Environment

2020 CFR > Title 32 > Subtitle A > Chapter I > Subchapter L – Environment

2019 CFR > Title 32 > Subtitle A > Chapter I > Subchapter L – Environment

2016 CFR > Title 32 > Subtitle A > Chapter I > Subchapter L – Environment

2015 CFR > Title 32 > Subtitle A > Chapter I > Subchapter L – Environment

2014 CFR > Title 32 > Subtitle A > Chapter I > Subchapter L – Environment