DIMITAR MITEV. Behaviour of Some Grasslands on the Slopes of the Balkan Mountain. Global Journal of Science Frontier Research, [S. l.], v. 20, n. H5, p. 23–33, 2020. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/2801. Acesso em: 6 may. 2024.