Columbia subject headings:
Catholic Church--Hymns--History and criticism.
Catholic Church--Liturgy.
Hymns, Latin--History and criticism.
Latin poetry, Medieval and modern--History and criticism.
Mysticism in literature.
Religious poetry, Latin--History and criticism.
Sequences (Liturgy)
Harvard subject headings:
Princeton subject headings:
Hymns, Latin--History and criticism.
Latin poetry, Medieval and modern--History and criticism.
Religious poetry, Latin--History and criticism.
Sequences (Liturgy)