2023 Washington Code 87.03.437 – Competitive bids — Use of purchase contract process in RCW 39.04.190

2022 Washington Code 87.03.437 – Competitive bids–Use of purchase contract process in RCW 39.04.190

2020 Washington Code 87.03.437 – Competitive bids — Use of purchase contract process in RCW 39.04.190

2019 Washington Code 87.03.437

2018 Washington Code 87.03.437 – Competitive bids — Use of purchase contract process in RCW 39.04.190

2016 Washington Code 87.03.437 – Competitive bids–Use of purchase contract process in RCW 39.04.190

2015 Washington Code 87.03.437 – Competitive bids–Use of purchase contract process in RCW 39.04.190

2009 Washington Code 87.03.437 – Competitive bids — Use of purchase contract process in RCW 39.04.190