Columbia subject headings:
Catastrophical, The, in literature.
Ecology in literature.
Risk in literature.
Harvard subject headings:
American literature--20th century--History and criticism
Catastrophical, The, in literature.
Climatic changes in literature.
Climatic changes in mass media.
Ecology in literature.
Risk in literature.
Princeton subject headings:
Catastrophical, The, in literature.
Ecology in literature.
Risk in literature.