METHODOLOGICAL TECHNIQUES HELPING FOREIGN STUDENTS MASTER THE PREPOSITIONAL-CASE SYSTEM OF THE RUSSIAN LANGUAGE. International Bulletin of Applied Science and Technology, [S. l.], v. 6, n. 4, p. 139–142, 2026. DOI: 10.37547/. Disponível em: https://researchcitations.com/index.php/ibast/article/view/6888. Acesso em: 21 apr. 2026.