Columbia subject headings:
Organ (Musical instrument)--Germany--Werl.
Pfarrkirche St. Walburga zu Werl--Organs.
Harvard subject headings:
Organ (Musical instrument)--Germany--Werl.
Princeton subject headings:
Organ (Musical instrument)--Germany (West)--Werl.
Pfarrkirche St. Walburga zu Werl--Organs.