Columbia subject headings:
Harvard subject headings:
Calvados (France)--History--20th century.
World War, 1939-1945--France--Calvados.
World War, 1939-1945--Underground movements--France--Calvados.
Princeton subject headings:
Calvados (France)--History--20th century.
World War, 1939-1945--France--Calvados.
World War, 1939-1945--Underground movements--France--Calvados.