Columbia subject headings:
Powys, John Cowper, 1872-1963.
Powys, Llewelyn, 1884-1939.
Powys, Theodore Francis, 1875-1953.
Harvard subject headings:
Authors, English--20th century--Criticism and interpretation.
Powys, John Cowper, 1872-1963
Powys, Llewelyn, 1884-1939
Powys, Theodore Francis, 1875-1953
Princeton subject headings:
Powys, John Cowper, 1872-1963.
Powys, Llewellyn, 1884-1939.
Powys, Theodore Francis, 1875-1953.