Columbia subject headings:
Harvard subject headings:
Austria--Politics and government--20th century--Congresses.
Austrian literature--History and criticism--Congresses
Monarchy--Austria--History--20th century--Congresses.
Monarchy--Russia--History--20th century--Congresses.
Russia (Federation)--Politics and government--20th century--Congresses.
Russian literature--History and criticism--Congresses
Social conflict--Austria--History--20th century--Congresses.
Social conflict--Russia--History--20th century--Congresses.
Princeton subject headings:
Austria--Politics and government--20th century.
Austrian literature--History and criticism--Congresses.
Russia--Politics and government--20th century.
Russian literature--History and criticism--Congresses.
Social conflict--Austria--History--Congresses.
Social conflict--Russia--History--Congresses.