DUMSKY А. BORDER CONTROL THEORY AS AN ELEMENT OF THE TRAINING OF BORDER GUARDS. Vestnik of Polotsk State University. Part E. Pedagogic Sciences, [S. l.], n. 7, p. 52-58, 2012. Disponível em: https://journals.psu.by/pedagogical/article/view/10070. Acesso em: 10 nov. 2026.