Columbia subject headings:
Catholic Church--Germany--Schleswig (Germany and Denmark)--Liturgy--Texts.
Ecclesiastical law--Ritual.
Rituals (Liturgical books)--Germany--Schleswig (Germany and Denmark)
Harvard subject headings:
Catholic Church--Germany--Schleswig--Liturgy--Texts.
Rituals (Liturgical books)--Germany--Schleswig.
Princeton subject headings: