Salamanca-Jiménez, Alveiro, Luz Adriana Lince-Salazar, and Norbey Antonio Alzate-Sánchez. 2018. “Spatial Variability of Soil Bulk Density at Coffee-Crop Plot Level”. Cenicafe Journal 69 (2): 47-59. https://doi.org/10.38141/10778/69205.