2023 Washington Code 28B.50.020 – Purpose

2022 Washington Code 28B.50.020 – Purpose

2020 Washington Code 28B.50.020 – Purpose

2019 Washington Code 28B.50.020 – Purpose

2018 Washington Code 28B.50.020 – Purpose

2016 Washington Code 28B.50.020 – Purpose

2015 Washington Code 28B.50.020 – Purpose

2014 Washington Code 28B.50.020 – Purpose

2013 Washington Code 28B.50.020 – Purpose

2009 Washington Code 28B.50.020 – Purpose