Loayza, ML, JA Bravo Cabrejos, F Reyes Navarro, and R Arcondo. “Structural Characterization of Iron Oxides and Hydroxides in the Clay Fraction of Soils from the Inca Civilization Moray Terraces”. Journal of Metals, Materials and Minerals 24, no. 2 (December 1, 2014). Accessed December 6, 2021. http://jmmm.material.chula.ac.th/index.php/jmmm/article/view/122.