Columbia subject headings:
Harvard subject headings:
Concentration camps--Europe.
Europe--Guidebooks.
Holocaust memorials--Europe.
Holocaust, Jewish (1939-1945)
Jewish ghettos--Europe.
Princeton subject headings:
Historic sites--Europe--Guidebooks.
Holocaust memorials--Europe--Guidebooks.
Holocaust, Jewish (1939-1945)--Europe--Guidebooks.
World War, 1939-1945--Concentration camps--Europe--Guidebooks.