2023 Washington Code 18.50.130 – “Certificate” and “license” synonymous

2022 Washington Code 18.50.130 – “Certificate” and “license” synonymous

2020 Washington Code 18.50.130 – “Certificate” and “license” synonymous

2019 Washington Code 18.50.130 – “Certificate” and “license” synonymous

2018 Washington Code 18.50.130 – “Certificate” and “license” synonymous

2016 Washington Code 18.50.130 – “Certificate” and “license” synonymous

2015 Washington Code 18.50.130 – “Certificate” and “license” synonymous

2014 Washington Code 18.50.130 – “Certificate” and “license” synonymous

2013 Washington Code 18.50.130 – “Certificate” and “license” synonymous

2009 Washington Code 18.50.130 – Certificate and “license” synonymous