erc: who: Chokkaram, S. what: Development of Precipitated Iron Fischer-Tropsch Catalysts. when: 19970829 where: https://digital.library.unt.edu/ark:/67531/metadc692232/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/