DENG, Hanyu. The Threat of Urbanization in the Beijing-Tianjin-Hebei Region to the Ecological Environment in the Past 20 Years. Highlights in Science, Engineering and Technology, [S. l.], v. 99, p. 212–218, 2024. DOI: 10.54097/1dzxe449. Disponível em: https://drpress.org/ojs/index.php/HSET/article/view/21558. Acesso em: 25 jun. 2026.