2014 Texas Natural Resources Code > Title 7 > Chapter 161 > Subchapter C – Powers and Duties

2011 Texas Natural Resources Code > Title 7 > Chapter 161 > Subchapter C – Powers and Duties

2009 Texas Natural Resources Code > Title 7 > Chapter 161 > Subchapter C – Powers and Duties

2008 Texas Codes > Natural Resources Code > Title 7 > Chapter 161 > Subchapter C – Powers And Duties