erc: who: Ha, B. C. what: Radioactive demonstration of the ``late wash`` Precipitate Hydrolysis Process when: 19920630 where: https://digital.library.unt.edu/ark:/67531/metadc1275061/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/