Columbia subject headings:
Harvard subject headings:
Firth, J. R. (John Rupert), 1890-1960.
Great Britain--Languages--History.
Linguistics--Great Britain--History.
Linguists--Great Britain--Biography.
Princeton subject headings:
Firth, J. R. (John Rupert), 1890-1960.
Linguistics--History--20th century.
Linguists--England--Biography.