2024 Iowa Code 310.28 – Engineering and other expense

2023 Iowa Code 310.28 – Engineering and other expense

2022 Iowa Code 310.28 – Engineering and other expense

2020 Iowa Code 310.28 – Engineering and other expense

2018 Iowa Code 310.28 – Engineering and other expense

2016 Iowa Code 310.28 – Engineering and other expense

2014 Iowa Code 310.28 – Engineering and other expense.

2009 Iowa Code 310.28 – Engineering and other expense