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3. Agencia de Noticias UN, 2015. Proyectos mineros deben contar con licencia social. http://agenciadenoticias.unal.edu.co/detalle/article/proyectos-mineros-deben-contar-con-licencia-social.html. Accessed September 2017.
4. Methylmercury concentrations in six fish species from two Colombian rivers;Alvarez;Bull. Environ. Contam. Toxicol.,2012
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