2023 Washington Code 28B.900.070 – This code defined

2022 Washington Code 28B.900.070 – This code defined

2020 Washington Code 28B.900.070 – This code defined

2019 Washington Code 28B.900.070 – This code defined

2018 Washington Code 28B.900.070 – This code defined

2016 Washington Code 28B.900.070 – This code defined

2015 Washington Code 28B.900.070 – This code defined

2014 Washington Code 28B.900.070 – This code defined

2013 Washington Code 28B.900.070 – This code defined

2009 Washington Code 28B.900.070 – This code defined