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Hernández-Medina, E. and Shive, J.W. 1946. Calcium-boron relationships in the nutrition of corn and the distribution of these elements in the plants. The Journal of Agriculture of the University of Puerto Rico. 30, 4 (Oct. 1946), 251–291. DOI:https://doi.org/10.46429/jaupr.v30i4.12864.