Columbia subject headings:
Habad--Russia--History--19th century.
Hasidism--Russia--History--19th century.
Harvard subject headings:
Habad--Soviet Union--History.
Hasidism--Soviet Union--History.
Jews--Soviet Union--History.
Soviet Union--Religion.
Princeton subject headings:
Habad--Russia--History--19th century.
Hasidism--Russia--History--19th century.