erc: who: Burris, L. what: Chemical Engineering Division waste management programs. Quarterly report, October--December 1974 when: 19750301 where: https://digital.library.unt.edu/ark:/67531/metadc1019959/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/