Columbia subject headings:
Catholic Church--Poland--History--Sources.
Catholic Church. Archdiocese of Lʹviv (Ukraine)--History--Sources.
Church archives--Poland.
Poland--History--Sources.
Harvard subject headings:
Catholic Church--Poland--History--Sources.
Catholic Church--Poland--History.
Catholic Church. Archdiocese of Lʹviv (Ukraine)--History--Sources.
Church archives--Poland.
Poland--History--Sources.
Princeton subject headings: