2023 Washington Code 18.64.255 – Authorized practices

2022 Washington Code 18.64.255 – Authorized practices

2020 Washington Code 18.64.255 – Authorized practices

2019 Washington Code 18.64.255 – Authorized practices

2018 Washington Code 18.64.255 – Authorized practices

2016 Washington Code 18.64.255 – Authorized practices

2015 Washington Code 18.64.255 – Authorized practices

2014 Washington Code 18.64.255 – Authorized practices

2013 Washington Code 18.64.255 – Authorized practices

2009 Washington Code 18.64.255 – Authorized practices