erc: who: Igelsrud, Iver what: Chemical Literature, Volume 13, Number 3, Fall 1961 when: 1961 where: https://digital.library.unt.edu/ark:/67531/metadc5732/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/