Columbia subject headings:
Harvard subject headings:
Brotherhoods--Austria--Perchtoldsdorf--History--Sources.
Catholic Church--Austria--Perchtoldsdorf--History--Sources.
Perchtoldsdorf (Austria)--Church history--Sources.
Zeche Unsere Liebe Frau zu Perchtoldsdorf (Austria)--History--Sources.
Princeton subject headings:
Brotherhoods--Austria--Perchtoldsdorf--History--Sources.
Catholic Church--Austria--Perchtoldsdorf--History--Sources.
Perchtoldsdorf (Austria)--Church history--Sources.
Zeche Unsere Liebe Frau zu Perchtoldsdorf (Austria)--History--Sources.