http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Vspomogatelʹnye istoricheskie dist︠s︡ipliny
Issued by Leningradskoe otedlenie of Arkheograficheskai︠a︡ komissii︠a︡ of the Akademii︠a︡ nauk SSSR.