erc: who: University of North Texas. Division of Vocal Studies. Opera. what: Ensemble: 2012-04-21 – Opera when: (:unav) unavailable where: https://digital.library.unt.edu/ark:/67531/metadc174017/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/