Versions of Iowa Code 218.31 - Witnesses on LawServer 2024 Iowa Code 218.31 – Witnesses 2023 Iowa Code 218.31 – Witnesses 2022 Iowa Code 218.31 – Witnesses 2020 Iowa Code 218.31 – Witnesses 2018 Iowa Code 218.31 – Witnesses 2016 Iowa Code 218.31 – Witnesses 2014 Iowa Code 218.31 – Witnesses. 2009 Iowa Code 218.31 – Witnesses