2024 Texas Occupations Code 51.452 – Telephone Information System

2023 Texas Occupations Code 51.452 – Telephone Information System

2022 Texas Occupations Code 51.452 – Telephone Information System

2019 Texas Occupations Code 51.452 – Telephone Information System

2018 Texas Occupations Code 51.452 – Telephone Information System

2016 Texas Occupations Code 51.452 – Telephone Information System

2014 Texas Occupations Code 51.452 – Telephone Information System

2011 Texas Occupations Code 51.452 – Telephone Information System

2009 Texas Occupations Code 51.452 – Telephone Information System

2008 Texas Occupations Code 51.452 – Telephone Information System