Versions of Iowa Code 147.28 - National organization on LawServer 2023 Iowa Code 147.28 – National organization 2022 Iowa Code 147.28 – National organization 2020 Iowa Code 147.28 – National organization 2018 Iowa Code 147.28 – National organization 2016 Iowa Code 147.28 – National organization 2014 Iowa Code 147.28 – National organization. 2009 Iowa Code 147.28 – National organization