Columbia subject headings:
Ecocriticism.
Ecofiction--Themes, motives.
German literature--History and criticism--Theory, etc.
Literature and science.
Literature, Modern--History and criticism.
Science fiction--Themes, motives.
Harvard subject headings:
Ecocriticism.
Ecofiction--Themes, motives.
German literature--History and criticism--Theory, etc.
Literature and science
Literature, Modern--History and criticism
Science fiction--Themes, motives.
Princeton subject headings:
Ecocriticism.