RATTASEPP, S. The ontological primacy of umwelt. Sign Systems Studies, [S. l.], v. 51, n. 1, p. 101–113, 2023. DOI: 10.12697/SSS.2023.51.1.04. Disponível em: https://ojs.utlib.ee/index.php/sss/article/view/SSS.2023.51.1.04. Acesso em: 22 jul. 2024.