2020 CFR > Title 21 > Chapter I > Subchapter K – Tobacco Products

2014 CFR > Title 21 > Chapter I > Subchapter K – Tobacco Products

2015 CFR > Title 21 > Chapter I > Subchapter K – Tobacco Products

2016 CFR > Title 21 > Chapter I > Subchapter K – Tobacco Products

2019 CFR > Title 21 > Chapter I > Subchapter K – Tobacco Products