Columbia subject headings:
Poland--History--Occupation, 1939-1945.
Switzerland--History--20th century.
World War, 1939-1945--Concentration camps--Switzerland.
World War, 1939-1945--Education and the war.
World War, 1939-1945--Poland.
Harvard subject headings:
Poland--History--Occupation, 1939-1945
Switzerland--History--20th century.
World War, 1939-1945--Concentration camps--Switzerland.
World War, 1939-1945--Education and the war.
World War, 1939-1945--Poland.
Princeton subject headings: