KATZOUNOV, V. Endangered Photo Collections about the Participation of Preindustrial Bulgaria in Three Wars in the Beginning of the 20th Century. Digital Presentation and Preservation of Cultural and Scientific Heritage, [S. l.], v. 6, p. 255–260, 2016. DOI: 10.55630/dipp.2016.6.27. Disponível em: https://dipp.math.bas.bg/dipp/article/view/dipp.2016.6.27. Acesso em: 4 may. 2024.