Versions of See prior versions of a law on LawServer 2023 Washington Code 49.80.020 – Use of skilled and trained workforce required — Advanced safety curriculum — Application 2022 Washington Code 49.80.020 – Use of skilled and trained workforce required–Advanced safety curriculum–Application 2020 Washington Code 49.80.020 – Use of skilled and trained workforce required — Advanced safety curriculum — Application 2019 Washington Code 49.80.020
