erc: who: Texas Commission on Environmental Quality what: The Advocate, Volume 16, Issue 2, April-June 2011 when: 20110400 where: https://texashistory.unt.edu/ark:/67531/metapth576017/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://texashistory.unt.edu/ark:/67531/