2023 Washington Code 35.97.050 – Heating systems — Authorized by legislative authority of municipality — Competitive bidding

2022 Washington Code 35.97.050 – Heating systems–Authorized by legislative authority of municipality–Competitive bidding

2020 Washington Code 35.97.050 – Heating systems — Authorized by legislative authority of municipality — Competitive bidding

2019 Washington Code 35.97.050 – Heating systems — Authorized by legislative authority of municipality — Competitive bidding

2018 Washington Code 35.97.050 – Heating systems — Authorized by legislative authority of municipality — Competitive bidding

2016 Washington Code 35.97.050 – Heating systems–Authorized by legislative authority of municipality–Competitive bidding

2015 Washington Code 35.97.050 – Heating systems–Authorized by legislative authority of municipality–Competitive bidding

2014 Washington Code 35.97.050 – Heating systems — Authorized by legislative authority of municipality — Competitive bidding

2013 Washington Code 35.97.050 – Heating systems — Authorized by legislative authority of municipality — Competitive bidding

2009 Washington Code 35.97.050 – Heating systems — Authorized by legislative authority of municipality — Competitive bidding