2023 Iowa Code 9I.9 – Lessees conducting research or experiments

2022 Iowa Code 9I.9 – Lessees conducting research or experiments

2020 Iowa Code 9I.9 – Lessees conducting research or experiments

2018 Iowa Code 9I.9 – Lessees conducting research or experiments

2016 Iowa Code 9I.9 – Lessees conducting research or experiments

2014 Iowa Code 9I.9 – Lessees conducting research or experiments.

2009 Iowa Code 9I.9 – Lessees conducting research or experiments