Ormachea, O., Villazón, A. and Terceros, I. (2018) “ANALYSIS OF MINING ORE CONCENTRATES WITH A LOW COST PORTABLE LIBS SYSTEM”, Revista Investigación & Desarrollo, 18(1). Available at: https://www1.upb.edu/revista-investigacion-desarrollo/index.php/id/article/view/171 (Accessed: 23 October 2025).