WEI SHENG. The Issue of ‘Heixiazi Island’ on the Eastern Border Between China and the Soviet Union (Russia). Journal of Research in Social Science and Humanities, [S. l.], v. 2, n. 5, p. 29–33, 2023. Disponível em: https://www.pioneerpublisher.com/jrssh/article/view/265. Acesso em: 3 may. 2025.