CHEUNG, T. From protoplasm to Umwelt: Plans and the technique of nature in Jakob von Uexküll’s theory of organismic order. Sign Systems Studies, [S. l.], v. 32, n. 1/2, p. 139–167, 2004. DOI: 10.12697/SSS.2004.32.1-2.06. Disponível em: https://ojs.utlib.ee/index.php/sss/article/view/SSS.2004.32.1-2.06. Acesso em: 2 may. 2024.