EXTRACTION OF CRISTOBALITE FROM MILKY-WHITE FORMS OF QUARTZ STUFF1. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 35–46, 1997. DOI: 10.17770/etr1997vol1.1859. Disponível em: https://archive-journals.rtu.lv/etr/article/view/3404.. Acesso em: 11 mar. 2026.