erc: who: Gutschick, V.P. what: Solution culture method for studying nutrient uptake and stress when: 19840101 where: https://digital.library.unt.edu/ark:/67531/metadc1209688/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/