Barrientos Marin, Jorge, and Carlos Andrés Vasco Correa. “Biofuel Production and Rural Employment in Colombia 2009-2015”. Apuntes del Cenes 39, no. 70 (August 10, 2020): 233–260. Accessed June 30, 2024. https://revistas.uptc.edu.co/index.php/cenes/article/view/10426.