Child Studies in Udmurtia in the 1920s. Comparativ, [S. l.], v. 29, n. 1, p. 44–63, 2019. DOI: 10.26014/j.comp.2019.01.03. Disponível em: https://www.comparativ.net/v2/article/view/2916. Acesso em: 10 may. 2025.