Detail from Soviet Poster "Ленинизм : великий источник дружбы и Братства народов СССР/Leninism : velikiĭ istochnik druzhby i bratstva narodov SSSR". Photo by Anna Rubinowski.
The Library catalogues all titles in Slavic languages in transliteration. Transliteration is used to display the Cyrillic alphabet using Roman characters. The transliteration follows the transliteration tables provided by the Library of Congress for various non-Roman languages (ALA-LC Romanization Tables: Transliteration Schemes for Non-Roman Scripts), including Slavic and non-Slavic languages that use the Cyrillic alphabet.
Only titles acquired in the last few years will have the original Cyrillic title included in the catalogue record, therefore it is important to be familiar with the correct transliteration method used. Check individual databases to find more information on what transliteration standard was used.