2024 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2023 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2022 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2021 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2020 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2019 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2016 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2015 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2014 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2010 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof

2009 27 CFR 30.72 – Recording obscuration by proprietors using the optional method for determination of proof