http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Politicheskoe polozhenie Bukharskogo Ėmirata i Khivinskogo Khanstva v 1917-1920 gg
Political position of the Bukhara Emirate and Khiva Khanate in 1917-1920