Columbia subject headings:
Ecology in literature--Congresses.
Environmental degradation in literature--Congresses.
German literature--Themes, motives--Congresses.
Literature and anthropology--Europe, German-speaking--Congresses.
Literature and society--Europe, German-speaking--Congresses.
Literature, Modern--History and criticism--Congresses.
Nature in literature--Congresses.
Harvard subject headings:
Ecology in literature--Congresses.
Environmental degradation in literature--Congresses.
German literature--History and criticism--Congresses
German literature--Themes, motives--Congresses.
Human ecology in literature--Congresses.
Princeton subject headings:
Ecology in literature--Congresses.
Environmental degradation in literature--Congresses.
German literature--Themes, motives--Congresses.
Literature and anthropology--Europe, German-speaking--Congresses.
Literature and society--Europe, German-speaking--Congresses.
Literature, Modern--History and criticism--Congresses.
Nature in literature--Congresses.