Columbia subject headings:
Harvard subject headings:
Cologne (Germany)--History--Destruction, 1942-1945.
World War, 1939-1945--Destruction and pillage--Germany--Cologne.
World War, 1939-1945--Personal narratives, German.
Princeton subject headings:
Cologne (Germany)--History--Destruction, 1942-1945.
World War, 1939-1945--Destruction and pillage--Germany (West)--Cologne.
World War, 1939-1945--Personal narratives, German.