2024 CFR > Title 32 > Subtitle A > Chapter I > Subchapter C > Part 21 > Subpart A – Introduction

2023 CFR > Title 32 > Subtitle A > CHAPTER I > SUBCHAPTER C > PART 21 > Subpart A – Introduction

2022 CFR > Title 32 > Subtitle A > Chapter I > Subchapter C > Part 21 > Subpart A – Introduction

2021 CFR > Title 32 > Subtitle A > Chapter I > Subchapter C > Part 21 > Subpart A – Introduction

2020 CFR > Title 32 > Subtitle A > Chapter I > Subchapter C > Part 21 > Subpart A – Introduction

2019 CFR > Title 32 > Subtitle A > Chapter I > Subchapter C > Part 21 > Subpart A – Introduction

2016 CFR > Title 32 > Subtitle A > Chapter I > Subchapter C > Part 21 > Subpart A – Introduction

2015 CFR > Title 32 > Subtitle A > Chapter I > Subchapter C > Part 21 > Subpart A – Introduction

2014 CFR > Title 32 > Subtitle A > Chapter I > Subchapter C > Part 21 > Subpart A – Introduction