Versions of Missouri Laws 170.028 - Industry certifications, professional licenses, and occupational competency .. on LawServer 2023 Missouri Laws 170.028 – Industry certifications, professional licenses, and occupational competency .. 2022 Missouri Laws 170.028 – Industry certifications, professional licenses, and occupational competency .. 2020 Missouri Laws 170.028 – Industry certifications, professional licenses, and occupational competency .. 2018 Missouri Laws 170.028 – Industry certifications, professional licenses, and occupational competency ..