Columbia subject headings:
Authors, Welsh--20th century--Biography.
Rees, Goronwy, 1909-1979.
Spies--Great Britain--Biography.
Harvard subject headings:
Authors, Welsh--20th century--Biography.
Berlin (Germany)--History--1918-1945
Rees, Goronwy, 1909-1979
Spies--Great Britain--Biography.
Wales--Social life and customs.
Welsh--Germany--History--20th century.
World War, 1939-1945--Personal narratives, British
Princeton subject headings:
Authors, Welsh--20th century--Biography.
Rees, Goronwy, 1909-1979.
Spies--Great Britain--Biography.