Versions of Iowa Code 89.1 - Authority on LawServer 2023 Iowa Code 89.1 – Authority 2022 Iowa Code 89.1 – Authority 2020 Iowa Code 89.1 – Authority 2018 Iowa Code 89.1 – Authority 2016 Iowa Code 89.1 – Authority 2014 Iowa Code 89.1 – Authority. 2009 Iowa Code 89.1 – Authority
