Columbia subject headings:
American literature--20th century--History and criticism.
Ecocriticism in literature.
English literature--20th century--History and criticism.
Environmental protection in literature.
Postmodernism.
Harvard subject headings:
American literature--20th century--History and criticism
Ecocriticism in literature.
English literature--20th century--History and criticism
Environmental protection in literature.
Postmodernism.
Princeton subject headings:
American literature--20th century--History and criticism.
Ecocriticism in literature.
English literature--20th century--History and criticism.
Environmental protection in literature.
Postmodernism.