Terra, Juliana, Rafael Ortiz Sanches, Maria Izabel Maretti Silveira Bueno, and Fábio Luiz Melquiades. “Multielement Analysis of Soils: A Proposal Involving a Portable X-Ray Fluorescence Equipment”. Semina: Ciências Exatas e Tecnológicas 35, no. 2 (October 30, 2014): 207–214. Accessed November 24, 2024. https://ojs.uel.br/revistas/uel/index.php/semexatas/article/view/16484.