Belarusian Soviet Encyclopedia in 12 Volumes and 1 (additional). In Russian (ask us if in doubt)/Belorusskaya sovetskaya entsiklopediya v 12 tomakh and 1 (dopolnitelnyy). Minsk 1972 in Belarusian (Belarusian Savets Encyclopaedia). SKUalb7f3868eebc04c198.