Clean Air Regulations 1967Law:S4352:atom:currency2026-02-19T00:00:00.0000000+08:00Clean Air Regulations 1967S4352:2011090515132011-09-05T15:13:00.0000000+08:00Clean Air Regulations 1967Clean Air Regulations 1967PCO Helpdesklegislation@pco.wa.gov.au