DETERMINING THE STRENGTH OF THE CEMENT-CARRYING WAGON-HOPPER AGAINST OVERTURNING. American Journal of Pedagogical and Educational Research, [S. l.], v. 15, p. 12–19, 2023. Disponível em: https://americanjournal.org/index.php/ajper/article/view/1111. Acesso em: 24 oct. 2025.