erc: who: Ray, W.E. what: STAINLESS STEEL CLADDING DEVELOPMENT. Quarterly Progress Report for Period Ending March 31, 1970. when: 19700101 where: https://digital.library.unt.edu/ark:/67531/metadc871689/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/