INVESTIGATION OF STRUCTURE AND COMPOSITION OF CLAY IN LAKES OF LATGALE FOR PRACTICAL USE. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 298–303, 2019. DOI: 10.17770/etr2019vol1.4069. Disponível em: https://archive-journals.rtu.lv/etr/article/view/4269.. Acesso em: 11 mar. 2026.