Columbia subject headings:
Libraries--Russia (Federation)--History--20th century--Sources.
Library cooperation--Russia (Federation)--History--20th century--Sources.
Harvard subject headings:
Libraries--Russia (Federation)--History--20th century--Sources.
Library cooperation--Russia (Federation)--History--20th century--Sources.
Princeton subject headings:
Libraries--Russia (Federation)--History--20th century--Sources.
Library cooperation--Russia (Federation)--History--20th century--Sources.