Versions of Iowa Code 321.472 - Signs posted on LawServer 2023 Iowa Code 321.472 – Signs posted 2022 Iowa Code 321.472 – Signs posted 2020 Iowa Code 321.472 – Signs posted 2018 Iowa Code 321.472 – Signs posted 2016 Iowa Code 321.472 – Signs posted 2014 Iowa Code 321.472 – Signs posted. 2009 Iowa Code 321.472 – Signs posted
