Columbia subject headings:
Christian fiction, German--History and criticism.
Dystopias in literature.
Ecofiction--History and criticism.
Environmentalism in literature.
Future, The, in literature.
German fiction--20th century--Themes, motives.
Science fiction, German--History and criticism.
Socialism in literature.
Socialist literature--Germany--History and criticism.
Utopias in literature.
Harvard subject headings:
Christian fiction, German--History and criticism.
Dystopias in literature
Ecofiction--History and criticism.
Environmentalism in literature
Future, The, in literature
German fiction--20th century--Themes, motives.
Science fiction, German--History and criticism.
Socialism in literature
Socialist literature--Germany--History and criticism.
Utopias in literature
Princeton subject headings:
Christian fiction, German--History and criticism.
Dystopias in literature.
Ecofiction--History and criticism.
Environmentalism in literature.
Future, The, in literature.
German fiction--20th century--Themes, motives.
Science fiction, German--History and criticism.
Socialism in literature.
Socialist literature--Germany--History and criticism.
Utopias in literature.