erc:
who: Pasieka, Donald F.
what: Ball-mounting fixture for a roundness gage
when: 19820216
where: https://digital.library.unt.edu/ark:/67531/metadc1182211/
erc-support:
who: University of North Texas Libraries
what: Permanent: Stable Content:
when: 20081203
where: https://digital.library.unt.edu/ark:/67531/