Columbia subject headings:
European poetry--Themes, motives--Congresses.
Love poetry--History and criticism--Congresses.
Religious poetry--History and criticism--Congresses.
Harvard subject headings:
Heart in literature
Love poetry, European--History and criticism.
Poetry, Medieval--History and criticism
Religious poetry--History and criticism.
Princeton subject headings:
European poetry--Themes, motives--Congresses.
Love poetry--History and criticism--Congresses.
Religious poetry--History and criticism--Congresses.