2023 Washington Code 31.20.140 – Participation in federal act authorized

2022 Washington Code 31.20.140 – Participation in federal act authorized

2020 Washington Code 31.20.140 – Participation in federal act authorized

2019 Washington Code 31.20.140 – Participation in federal act authorized

2018 Washington Code 31.20.140 – Participation in federal act authorized

2016 Washington Code 31.20.140 – Participation in federal act authorized

2015 Washington Code 31.20.140 – Participation in federal act authorized

2014 Washington Code 31.20.140 – Participation in federal act authorized

2013 Washington Code 31.20.140 – Participation in federal act authorized

2009 Washington Code 31.20.140 – Participation in federal act authorized