Columbia subject headings:
Harvard subject headings:
Catholic Church--Liturgy.
Ordinals (Liturgical books)--Texts
St. Arnulf (Benedictine abbey)--History.
Princeton subject headings:
Abbaye de Saint-Arnould de Metz--History.
Catholic Church--France--Metz--Liturgy--History and criticism.
Catholic Church--Liturgy--Texts.
Ordinals (Liturgical books)--Texts.