erc: who: Barrett, L.B. (Barrett Consulting Associates, Inc., Colorado Springs, CO (United States)) what: Utility solar water heating workshops when: 19920101 where: https://digital.library.unt.edu/ark:/67531/metadc1098128/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/