PERGA, T. Theodore Roosevelt’s Policy in the Field of Ecology: Conservation Natural Resources. Problems of World History, [S. l.], n. 2, p. 82–96, 2016. DOI: 10.46869/2707-6776-2016-2-5. Disponível em: https://journal.ivinas.gov.ua/pwh/article/view/112. Acesso em: 27 apr. 2024.