Ryskulova A.A. Р. А. Astana ecology. Рroblems of engineering and professional education, [S. l.], v. 17, n. 2, p. 35–37, 2023. DOI: 10.32523/2220-685X-2013-17-2-35-37. Disponível em: https://bulprengpe.enu.kz/index.php/main/article/view/491. Acesso em: 14 nov. 2024.