Combatt-Cabellero, E. M., Polo-Santos, J. M. and Jarma-Orosco, A. D. J. (2017) “Manihot cultivation yield using organic and chemical fertilizers in an acid soil”, Ciencia y Agricultura, 14(1), pp. 57–64. doi: 10.19053/01228420.v14.n1.2017.6088.