2024 Iowa Code 314.12A – Preservation of topsoil in highway construction

2023 Iowa Code 314.12A – Preservation of topsoil in highway construction

2022 Iowa Code 314.12A – Preservation of topsoil in highway construction

2020 Iowa Code 314.12A – Preservation of topsoil in highway construction

2018 Iowa Code 314.12A – Preservation of topsoil in highway construction

2016 Iowa Code 314.12A – Preservation of topsoil in highway construction

2014 Iowa Code 314.12A – Preservation of topsoil in highway construction.

2009 Iowa Code 314.12A – Preservation of topsoil in highway construction