Versions of 40 CFR 26.104 - Exempt research on LawServer 2024 40 CFR 26.104 – Exempt research 2023 40 CFR 26.104 – Exempt research 2022 40 CFR 26.104 – Exempt research 2021 40 CFR 26.104 – Exempt research 2020 40 CFR 26.104 – Exempt research 2019 40 CFR 26.104 – Exempt research