“Use of Scales and Bones of White Cachama (Piaractus Brachypomus) and Tilapia (Oreochromis Spp.) As Soil Corrective”. Revista Sistemas de Producción Agroecológicos, vol. 8, no. 2, Dec. 2017, pp. 2-19, https://doi.org/10.22579/22484817.699.