Versions of Iowa Code 359.37 - Regulations on LawServer 2023 Iowa Code 359.37 – Regulations 2022 Iowa Code 359.37 – Regulations 2020 Iowa Code 359.37 – Regulations 2018 Iowa Code 359.37 – Regulations 2016 Iowa Code 359.37 – Regulations 2014 Iowa Code 359.37 – Regulations. 2009 Iowa Code 359.37 – Regulations