BARNEY POPKIN. Selected Aspects of Military Geology Applied to Ukraine Barney Paul Popkin Consultant. Global Journal of Human-Social Science, [S. l.], v. 23, n. B1, p. 13–16, 2023. Disponível em: https://socialscienceresearch.org/index.php/GJHSS/article/view/103602. Acesso em: 4 may. 2024.