Columbia subject headings:
Harvard subject headings:
History teachers--France--Biography.
World War, 1939-1945--Concentration camps--France--Mulsanne.
World War, 1939-1945--Prisoners and prisons, German
Princeton subject headings:
Haegen, Guillaume Martin Van der.
History teachers--France--Biography.
World War, 1939-1945--Concentration camps--France--Mulsanne.
World War, 1939-1945--Prisoners and prisons, German.