Columbia subject headings:
Abtei Siegburg--History.
Church architecture--Germany--Siegburg.
Church decoration and ornament--Germany--Siegburg.
Pfarrkirche St. Servatius (Siegburg, Germany)
Siegburg (Germany)--Buildings, structures, etc.
Siegburg (Germany)--Church history.
St. Servatius (Siegburg, Germany)--History.
Harvard subject headings:
Abtei Siegburg.
Servatius, Saint, -384?--Cult--Germany.
Princeton subject headings: