Versions of Iowa Code 335.12 - Rules on LawServer 2024 Iowa Code 335.12 – Rules 2023 Iowa Code 335.12 – Rules 2022 Iowa Code 335.12 – Rules 2020 Iowa Code 335.12 – Rules 2018 Iowa Code 335.12 – Rules 2016 Iowa Code 335.12 – Rules 2014 Iowa Code 335.12 – Rules. 2009 Iowa Code 335.12 – Rules