Columbia subject headings:
Gapon, Georgiĭ Apollonovich, 1870-1906.
Russia--History--Revolution, 1905-1907.
Zubatov, Sergeĭ Vasilʹevich, 1864-1917.
Harvard subject headings:
Demonstrations--Russia (Federation)--Saint Petersburg.
Gapon, Georgiĭ Apollonovich, 1870-1906
Russia--History--Revolution, 1905-1907--Causes.
Saint Petersburg (Russia)--History--1905-1907.
Zubatov, Sergeĭ Vasilʹevich, 1864-1917.
Princeton subject headings:
Demonstrations--Russia (Federation)--Saint Petersburg.
Gapon, Georgiĭ Apollonovich, 1870-1906.
Russia--History--Revolution, 1905-1907--Causes.
Saint Petersburg (Russia)--History--1905-1907.
Zubatov, Sergeĭ Vasilʹevich, 1864-1917.