Randel, P. F., & Vélez-Santiago, J. (1986). Rearing Dairy Heifers on Pastures Fertilized at Moderate Levels With or Without Supplemental Concentrates at Different Stages. The Journal of Agriculture of the University of Puerto Rico, 70(2), 143–154. https://doi.org/10.46429/jaupr.v70i2.7086