2023 Washington Code 46.72.170 – Joint regulation

2022 Washington Code 46.72.170 – Joint regulation

2020 Washington Code 46.72.170 – Joint regulation

2019 Washington Code 46.72.170 – Joint regulation

2018 Washington Code 46.72.170 – Joint regulation

2016 Washington Code 46.72.170 – Joint regulation

2015 Washington Code 46.72.170 – Joint regulation

2014 Washington Code 46.72.170 – Joint regulation

2013 Washington Code 46.72.170 – Joint regulation

2009 Washington Code 46.72.170 – Joint regulation