?TECHNIQUES USED IN TRACE ELEMENT ANALYSIS OF URINARY CALCULI BY ATOMIC ABSORPTION SPECTROSCOPY. Biological Sciences - PJSIR, [S. l.], v. 37, n. 3, p. 88–91, 1994. Disponível em: https://www.v2.pjsir.org/index.php/biological-sciences/article/view/2586. Acesso em: 11 mar. 2026.