Versions of Iowa Code 3.1 - Form of bills on LawServer 2024 Iowa Code 3.1 – Form of bills 2023 Iowa Code 3.1 – Form of bills 2022 Iowa Code 3.1 – Form of bills 2020 Iowa Code 3.1 – Form of bills 2018 Iowa Code 3.1 – Form of bills 2016 Iowa Code 3.1 – Form of bills 2014 Iowa Code 3.1 – Form of bills. 2009 Iowa Code 3.1 – Form of bills