Columbia subject headings:
Catholic Church--Poland--History--19th century.
Persecution--Poland--History--19th century.
Poland--Church history--19th century.
Poland--History--1864-1918.
Harvard subject headings:
Catholic Church--Poland--History--19th century.
Poland--Church history--19th century.
Poland--History--1864-1918
Princeton subject headings:
Catholic Church--Poland--History--20th century.
Poland--History--Revolution, 1863-1864.
Poland--Religious life and customs--20th century.