Columbia subject headings:
European literature--19th century--History and criticism.
European literature--20th century--History and criticism.
Literature and science--Europe--History.
Science in literature.
Harvard subject headings:
Biology in literature--Congresses.
European literature--19th century--History and criticism--Congresses
European literature--20th century--History and criticism--Congresses
Literature and science--Europe--History--Congresses.
Science in literature--Congresses
Princeton subject headings:
European literature--19th century--History and criticism.
European literature--20th century--History and criticism.
Literature and science--Europe--History.
Science in literature.