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Beltrán-Morales, F. A.; Nieto-Garibay, A.; Murillo-Chollet, J. S. A.; Ruiz-Espinoza, F. H.; Troyo-Dieguez, E.; Alcala-Jauregui, J. A.; Murillo-Amador, B. Inorganic Nitrogen, Phosphorus and Potassium Content of Natural Fertilizers for Use in Organic Agriculture. Terra Latinoam 2019, 37, 371-378.