Ormachea, O., Villazón, A., & Terceros, I. (2018). ANALYSIS OF MINING ORE CONCENTRATES WITH A LOW COST PORTABLE LIBS SYSTEM. Revista Investigación &Amp; Desarrollo, 18(1). Recuperado a partir de https://www.upb.edu/revista-investigacion-desarrollo/index.php/id/article/view/171