Columbia subject headings:
Science fiction--Congresses.
Wells, H. G. (Herbert George), 1866-1946--Congresses.
Harvard subject headings:
Science fiction--Congresses.
Science fiction--History and criticism--Congresses
Wells, H. G. (Herbert George), 1866-1946--Congresses.
Wells, H. G. (Herbert George), 1866-1946--Criticism and interpretation--Congresses.
Princeton subject headings:
Science fiction--History and criticism--Congresses.
Wells, H. G. (Herbert George), 1866-1946--Criticism and interpretation--Congresses.