Versions of 25 CFR 5.1 - Definitions on LawServer 2024 25 CFR 5.1 – Definitions 2023 25 CFR 5.1 – Definitions 2022 25 CFR 5.1 – Definitions 2021 25 CFR 5.1 – Definitions 2020 25 CFR 5.1 – Definitions 2019 25 CFR 5.1 – Definitions 2016 25 CFR 5.1 – Definitions 2015 25 CFR 5.1 – Definitions 2014 25 CFR 5.1 – Definitions 2010 25 CFR 5.1 – Definitions 2009 25 CFR 5.1 – Definitions.