Versions of 31 CFR 50.4 - Definitions on LawServer 2024 31 CFR 50.4 – Definitions 2023 31 CFR 50.4 – Definitions 2022 31 CFR 50.4 – Definitions 2021 31 CFR 50.4 – Definitions 2020 31 CFR 50.4 – Definitions 2019 31 CFR 50.4 – Definitions 2016 31 CFR 50.4 – Definitions 2015 31 CFR 50.4 – Mandatory participation in Program 2014 31 CFR 50.4 – Mandatory participation in Program