Columbia subject headings:
Harvard subject headings:
Grellet, Henri--Imprisonment, 1940-1945.
Grellet, Henri--Imprisonment.
Prisoners of war--France--Biography
Prisoners of war--Germany--Biography
World War, 1939-1945--Personal narratives, French.
World War, 1939-1945--Prisoners and prisons, German.
Princeton subject headings:
World War, 1939-1945--Personal narratives, French.
World War, 1939-1945--Prisoners and prisons, German.