erc: who: Hill, Dwight E. what: Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Medfra and Mt. McKinley NTMS Quadrangles, Alaska, Including Concentrations of Forty-Three Additional Elements when: 19790200 where: https://digital.library.unt.edu/ark:/67531/metadc100945/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/