Columbia subject headings:
Lyric poetry--History and criticism.
Poetry, Medieval--History and criticism.
Semiotics and literature.
Harvard subject headings:
French poetry--To 1500--History and criticism
Love poetry, French--History and criticism
Love poetry, Portuguese--History and criticism.
Poetry, Medieval--History and criticism.
Portuguese poetry--To 1500--History and criticism.
Romance-language literature--History and criticism.
Romance-language poetry--History and criticism.
Semiotics and literature.
Princeton subject headings:
Poetry, Medieval--History and criticism.
Romance-language literature--History and criticism.
Semiotics and literature.