Regulation of the micronutrient status of plants by chelating agents and other factors - Wallace, Arthur; Abou-Zamzam, A. M; Alexander, Gordon; Brinkerhoff, F; Carmack, C. R; ElGazzar, A; Frolich, E. F; Hale, V. Q; Hsieh, Helen; Motoyama, E; Mueller, R. T; Romney, E. M; et al. (UCLA, 1971)