Versions of Iowa Code 142A.4 - Commission duties on LawServer 2023 Iowa Code 142A.4 – Commission duties 2022 Iowa Code 142A.4 – Commission duties 2020 Iowa Code 142A.4 – Commission duties 2018 Iowa Code 142A.4 – Commission duties 2016 Iowa Code 142A.4 – Commission duties 2014 Iowa Code 142A.4 – Commission duties. 2009 Iowa Code 142A.4 – Commission duties