1.
Chaves J. G, Torres M. F, Castillo M. Álvaro. Journal of Agricultural Sciences of the University of Nariño: 44 years of successful periplus. RCA [Internet]. 26Nov.2014 [cited 18Jul.2019];31(1):17-6. Available from: http://revistas.udenar.edu.co/index.php/rfacia/article/view/1934