Nikolai Marr’s Theory of the Labor Origin of the Language and its Sources. London Journal of Research In Humanities and Social Sciences, [S. l.], v. 24, n. 10, p. 45–53, 2024. Disponível em: https://journalspress.uk/index.php/LJRHSS/article/view/1512. Acesso em: 12 jan. 2026.