M.T. , F. M. (2023) “ CHEMICAL ALTERATION OF MATRIX FRAGMENTS AND VOLCANIC GLASS IN THE ANDEAN SOILS AND PALEOSOILS OF THE NORTHERN COLOMBIAN CORDILLERA CENTRAL”, Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales. Bogotá, Colombia, 30(114), pp. 47 – 66. doi: 10.18257/raccefyn.30(114).2006.2214.