erc:
who: United States. Department of Agriculture.
what: Corn culture.
when: 1940
where: https://digital.library.unt.edu/ark:/67531/metadc6173/
erc-support:
who: University of North Texas Libraries
what: Permanent: Stable Content:
when: 20081203
where: https://digital.library.unt.edu/ark:/67531/