2023 Iowa Code 308A.1 – Department of natural resources and transportation commissions to cooperate

2022 Iowa Code 308A.1 – Department of natural resources and transportation commissions to cooperate

2020 Iowa Code 308A.1 – Department of natural resources and transportation commissions to cooperate

2018 Iowa Code 308A.1 – Department of natural resources and transportation commissions to cooperate

2016 Iowa Code 308A.1 – Department of natural resources and transportation commissions to cooperate

2014 Iowa Code 308A.1 – Department of natural resources and transportation commissions to cooperate.

2009 Iowa Code 308A.1 – Department of natural resources and transportation commissions to cooperate