Versions of Iowa Code 229.31 - Commission of inquiry on LawServer 2023 Iowa Code 229.31 – Commission of inquiry 2022 Iowa Code 229.31 – Commission of inquiry 2020 Iowa Code 229.31 – Commission of inquiry 2018 Iowa Code 229.31 – Commission of inquiry 2016 Iowa Code 229.31 – Commission of inquiry 2014 Iowa Code 229.31 – Commission of inquiry. 2009 Iowa Code 229.31 – Commission of inquiry