2024 Iowa Code 101C.3 – Iowa propane education and research council established

2023 Iowa Code 101C.3 – Iowa propane education and research council established

2022 Iowa Code 101C.3 – Iowa propane education and research council established

2020 Iowa Code 101C.3 – Iowa propane education and research council established

2018 Iowa Code 101C.3 – Iowa propane education and research council established

2016 Iowa Code 101C.3 – Iowa propane education and research council established

2014 Iowa Code 101C.3 – Iowa propane education and research council established.

2009 Iowa Code 101C.3 – Iowa propane education and research council established