RUIHUI, H. Confusion of Secretary Science Teaching Materials in China High Schools on the Background of Social Problems. The International Journal of Humanities & Social Studies, [S. l.], v. 4, n. 4, 2016. Disponível em: https://internationaljournalcorner.com/index.php/theijhss/article/view/126448. Acesso em: 23 jul. 2024.