Columbia subject headings:
Catholic Church. Graduale Romanum (1979)--Concordances.
Catholic Church. Offertoriale sive versus offertoriorum--Concordances.
Graduals (Liturgical books)--Concordances.
Offertories (Music)--Concordances.
Harvard subject headings:
Catholic Church. Graduale Romanum (1974)--Concordances.
Catholic Church. Offertoriale sive versus offertoriorum--Concordances.
Graduals (Liturgical books)--Concordances.
Offertories (Music)--Concordances.
Princeton subject headings:
Catholic Church. Graduale Romanum (1979)--Concordances.
Catholic Church. Offertoriale sive versus offertoriorum--Concordances.
Graduals (Liturgical books)--Concordances.
Offertories (Music)--Concordances.