See chapter 82.34 RCW.
Exemptions and credits—Pollution control facilities.
RCW 82.04.427 — under Chapter 82.04 Business and occupation tax..
RCW 82.04.427
RCW 82.04.427 — under Chapter 82.04 Business and occupation tax..
RCW 82.04.427
See chapter 82.34 RCW.