2023 Washington Code 82.04.4461 – Credit — Preproduction development expenditures

2022 Washington Code 82.04.4461 – Credit–Preproduction development expenditures

2020 Washington Code 82.04.4461 – Credit — Preproduction development expenditures

2019 Washington Code 82.04.4461

2018 Washington Code 82.04.4461 – Credit — Preproduction development expenditures

2016 Washington Code 82.04.4461 – Credit–Preproduction development expenditures

2015 Washington Code 82.04.4461 – Credit–Preproduction development expenditures

2014 Washington Code 82.04.4461 – Credit — Preproduction development expenditures

2013 Washington Code 82.04.4461 – Credit — Preproduction development expenditures

2009 Washington Code 82.04.4461 – Credit — Preproduction development expenditures