ISSAEV, V.; ORESHNIKOVA, N. EXTRACTION OF CRISTOBALITE FROM MILKY-WHITE FORMS OF QUARTZ STUFF1. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 35–46, 1997. DOI: 10.17770/etr1997vol1.1859. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/1859.. Acesso em: 27 nov. 2024.