“Evaluation of the Use of a Biocarbon on the Absorption of Cadmium from the Soil and the Productivity of the Cocoa Crop (Theobroma Cacao L.) in the Ecuadorian Amazon”. 2019. Iberoamerican Environment & Sustainability Journal 2 (1): 6-15. https://doi.org/10.46380/rias.v2i1.33.