Columbia subject headings:
Harvard subject headings:
Climatic changes in literature--Congresses.
Climatic changes--Congresses
Ecology in literature--Congresses.
Romance fiction--History and criticism--Congresses.
Romance-language literature--History and criticism--Congresses.
Princeton subject headings:
Climatic changes in literature--Congresses.
Ecology in literature--Congresses.
Romance-language literature--History and criticism--Congresses.