SUDNITSINA, Diana; CHEREVICHKO, Anna. Estimation of River Utroya Ecological State in Intensive Organic Pollution Area Using Plankton Communities ’ Characteristics (Pskov Region). ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 3, p. 62–64, 2015. DOI: 10.17770/etr2013vol3.882. Disponível em: https://journals.rta.lv/index.php/ETR/article/view/882.. Acesso em: 4 dec. 2024.