KIRSCHNER, S. The institutional fate of Uexküll’s umwelt theory at the University of Hamburg. Sign Systems Studies, [S. l.], v. 51, n. 3-4, p. 441–512, 2023. DOI: 10.12697/SSS.2023.51.3-4.01. Disponível em: https://ojs.utlib.ee/index.php/sss/article/view/23476. Acesso em: 9 may. 2024.