Columbia subject headings:
Harvard subject headings:
Aachen (Germany)--History--20th century.
Detloff, Gerhard, Graf von Schwerin, 1899-1980.
World War, 1939-1945--Campaigns--Germany--Aachen.
Princeton subject headings:
Aachen (Germany)--History--Siege, 1944.
Detloff, Gerhard, Graf von Schwerin, 1899-1980.
Street names--Germany--Aachen.
War memorials--Germany--Aachen.
World War, 1939-1945--Germany--Aachen.