erc: who: Paradise, D.R. what: Pump, sodium, inducer, intermediate size (ISIP) (impeller/inducer/diffuser retrofit) when: 19780421 where: https://digital.library.unt.edu/ark:/67531/metadc1104293/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/