erc: who: United States. Dept. of Agriculture. what: Oats in the western half of the United States. when: 1940 where: https://digital.library.unt.edu/ark:/67531/metadc5892/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/