Versions of South Dakota Codified Laws 34-20B-28. Substances not subject to control as precursors of precursors on LawServer 2023 South Dakota Codified Laws 34-20B-28. Substances not subject to control as precursors of precursors 2022 South Dakota Codified Laws 34-20B-28. Substances not subject to control as precursors of precursors 2021 South Dakota Codified Laws 34-20B-28. Substances not subject to control as precursors of precursors 2019 South Dakota Codified Laws 34-20B-28. Substances not subject to control as precursors of precursors 2018 South Dakota Codified Laws 34-20B-28. Substances not subject to control as precursors of precursors 2016 South Dakota Codified Laws 34-20B-28. Substances not subject to control as precursors of precursors 2014 South Dakota Codified Laws 34-20B-28. Substances not subject to control as precursors of precursors 2010 South Dakota Laws 34-20B-28 – Substances not subject to control as precursors of precursors