Columbia subject headings:
Orel (Orlovskai︠a︡ oblastʹ, Russia)--History--20th century--Sources.
Soviet Union--History--German occupation, 1941-1944--Sources.
World War, 1939-1945--Russia (Federation)--Orel (Orlovskai︠a︡ oblastʹ)--Sources.
Harvard subject headings:
Orel (Orlovskai︠a︡ oblastʹ, Russia)--History--20th century--Sources.
Soviet Union--History--German occupation, 1941-1944--Sources.
World War, 1939-1945--Russia (Federation)--Orel (Orlovskai︠a︡ oblastʹ)--Sources.
Princeton subject headings: