erc: who: Texas Office for Prevention of Developmental Disabilities what: Texas Biennial Disability Report: 2006 when: 20061200 where: https://texashistory.unt.edu/ark:/67531/metapth307555/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://texashistory.unt.edu/ark:/67531/