Columbia subject headings:
Harvard subject headings:
American fiction--20th century--History and criticism
Books and reading--United States
Criticism--United States
Science fiction, American--History and criticism.
Science fiction--History and criticism--Bibliography.
Princeton subject headings:
American fiction--20th century--History and criticism.
Books and reading--United States.
Criticism--United States.
Science fiction, American--History and criticism.
Science fiction--History and criticism--Bibliography.