RAMOS, M. C.; PETRUK, R.; ISHCHENKO, V.; PETRUK, G. SOURCES OF ENVIRONMENTAL THREATS IN EL-ORO PROVINCE (ECUADOR). Scientific Works of Vinnytsia National Technical University, [S. l.], n. 1, p. 1–6, 2017. Disponível em: https://works.vntu.edu.ua/index.php/works/article/view/494. Acesso em: 6 may. 2024.