Columbia subject headings:
Harvard subject headings:
Occultism--Russia (Federation)--History--20th century.
Religion and science--Russia (Federation)--History--20th century.
Spiritualism--Russia (Federation)--History--20th century.
Princeton subject headings:
Occultism--Russia (Federation)--History--20th century.
Religion and science--Russia (Federation)--History--20th century.
Spiritualism--Russia (Federation)--History--20th century.