HUPPES, Gjalt; ISHIKAWA, Masanobu. Letter to the Editorial Office: Eco-efficiency for Sustainability: the Challenge Investigated at the 3rd Eco-Efficiency Conference, 9-11 June 2010. Problemy Ekorozwoju, [S. l.], v. 5, n. 2, p. 155–156, 2010. Disponível em: https://ph.pollub.pl/index.php/preko/article/view/4758. Acesso em: 22 jul. 2024.