Columbia subject headings:
Brusnev, Mikhail Ivanovich, 1866-1937.
Gruppa "Osvobozhdenie truda."
Socialism--Soviet Union--History.
Harvard subject headings:
Brusnev, Mikhail Ivanovich, 1866-1937.
Gruppa "Osvobozhdenie truda".
Socialism--Russia--History
Socialism--Russia.
Princeton subject headings:
Brusnev, Mikhail Ivanovich, 1866-1937.
Gruppa "Osvobozhdenie truda"
Socialism--Soviet Union--History.