Gutmans, Marger. “MINERALOGIA DO SOLO, ELEMENTOS RAROS E VITAMINAS”. REVISTA DE AGRICULTURA 21, no. 1-2 (janeiro 19, 2016): 21–31. Acessado janeiro 28, 2026. https://www.fealq.org.br/ojs/index.php/revistadeagricultura/article/view/2287.