erc: who: Hagan, J. what: Amblema plicata, Specimen #49 when: 19761222 where: https://digital.library.unt.edu/ark:/67531/metadc34187/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/