PADE, Christian. On photosynthesis and polar bears. Ökologisches Wirtschaften - Fachzeitschrift, [S. l.], v. 22, n. 3, 2007. DOI: 10.14512/oew.v22i3.530. Disponível em: https://www.oekologisches-wirtschaften.de/index.php/oew/article/view/530. Acesso em: 19 apr. 2024.