erc: who: (:unav) unavailable what: MERCURY REMOVAL FROM DOE SOLID MIXED WASTE USING THE GEMEP(sm) TECHNOLOGY when: 19990301 where: https://digital.library.unt.edu/ark:/67531/metadc618499/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/