Columbia subject headings:
Middle Earth (Imaginary place)--Dictionaries.
Tolkien, J. R. R. (John Ronald Reuel), 1892-1973--Dictionaries.
Harvard subject headings:
Middle Earth (Imaginary place)--Dictionaries.
Tolkien, J. R. R. (John Ronald Reuel), 1892-1973--Dictionaries.
Princeton subject headings:
Authors, English--20th century--Biography.
Fantasy fiction, English--History and criticism.
Middle Earth (Imaginary place)
Tolkien, J. R. R. (John Ronald Reuel), 1892-1973--Handbooks, manuals, etc.