2024 Texas Occupations Code Chapter 1957 – Industrial Hygienists

2023 Texas Occupations Code Chapter 1957 – Industrial Hygienists

2022 Texas Occupations Code Chapter 1957 – Industrial Hygienists

2019 Texas Occupations Code Chapter 1957 – Industrial Hygienists

2018 Texas Occupations Code Chapter 1957 – Industrial Hygienists

2016 Texas Occupations Code Chapter 1957 – Industrial Hygienists