Versions of Iowa Code 279.21 - Principals on LawServer 2024 Iowa Code 279.21 – Principals 2023 Iowa Code 279.21 – Principals 2022 Iowa Code 279.21 – Principals 2020 Iowa Code 279.21 – Principals 2018 Iowa Code 279.21 – Principals 2016 Iowa Code 279.21 – Principals 2014 Iowa Code 279.21 – Principals. 2009 Iowa Code 279.21 – Principals
