2023 Washington Code 48.66.160 – Federal law supersedes

2022 Washington Code 48.66.160 – Federal law supersedes

2020 Washington Code 48.66.160 – Federal law supersedes

2019 Washington Code 48.66.160

2018 Washington Code 48.66.160 – Federal law supersedes

2016 Washington Code 48.66.160 – Federal law supersedes

2015 Washington Code 48.66.160 – Federal law supersedes

2014 Washington Code 48.66.160 – Federal law supersedes

2013 Washington Code 48.66.160 – Federal law supersedes

2009 Washington Code 48.66.160 – Federal law supersedes