erc:
who: Geological Survey (U.S.)
what: Geological Survey Research, 1965: Chapter A
when: 1965
where: https://digital.library.unt.edu/ark:/67531/metadc872677/
erc-support:
who: University of North Texas Libraries
what: Permanent: Stable Content:
when: 20081203
where: https://digital.library.unt.edu/ark:/67531/