Columbia subject headings:
American literature--20th century.
Comparative literature--English and German.
Comparative literature--German and English.
Harvard subject headings:
American literature--20th century--History and criticism
Comparative literature--English and German
Comparative literature--English and German.
Comparative literature--German and English.
Princeton subject headings:
American literature--20th century--History and criticism.
Comparative literature--English and German.
Comparative literature--German and English.