Columbia subject headings:
Harvard subject headings:
Cemeteries--Germany--Rhein-Erft-Kreis--Guidebooks.
Holocaust memorials--Germany--Rhein-Erft-Kreis--Guidebooks.
Rhein-Erft-Kreis (Germany)--Guidebooks.
World War, 1914-1918--Monuments--Germany--Rhein-Erft-Kreis--Guidebooks.
World War, 1939-1945--Monuments--Germany--Rhein-Erft-Kreis--Guidebooks.
Princeton subject headings:
Cemeteries--Germany--Rhein-Erft-Kreis--Guidebooks.
Guidebooks.
Holocaust memorials--Germany--Rhein-Erft-Kreis--Guidebooks.
Rhein-Erft-Kreis (Germany)--Guidebooks.
World War, 1914-1918--Monuments--Germany--Rhein-Erft-Kreis--Guidebooks.
World War, 1939-1945--Monuments--Germany--Rhein-Erft-Kreis--Guidebooks.