Columbia subject headings:
Catholic Church--Liturgy--History.
Christian drama, Latin (Medieval and modern)--History and criticism.
Drama, Medieval--History and criticism.
Liturgical drama--History and criticism.
Harvard subject headings:
Catholic Church--Liturgy--History--Middle Ages, 600-1500.
Catholic Church--Liturgy--History.
Christian drama, Latin (Medieval and modern)--History and criticism
Drama, Medieval--History and criticism.
Drama--History and criticism
Liturgical drama.
Princeton subject headings:
Catholic Church--Liturgy--History--Middle Ages, 600-1500.
Christian drama, Latin (Medieval and modern)--History and criticism.
Drama, Medieval--History and criticism.
Liturgical drama--History and criticism.