ENVIROMENT-FRIENDLY FARMING PROJECTS IN LATGALE. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 75–80, 2001. DOI: 10.17770/etr2001vol1.1939. Disponível em: https://archive-journals.rtu.lv/etr/article/view/3499.. Acesso em: 11 mar. 2026.