Valdez-Nuñez, R., Rojas-García, J. y Ríos-Ruiz, W. 2019. Microbiological indicators of tropical soils quality in ecosystems of the north-east area of Peru. Scientia Agropecuaria. 10, 2 (jul. 2019), 217-227. DOI:https://doi.org/10.17268/sci.agropecu.2019.02.07.