Columbia subject headings:
Leningradskai︠a︡ oblastʹ (Russia)--History--Sources.
World War, 1939-1945--Russia (Federation)--Leningradskai︠a︡ oblastʹ--Sources.
World War, 1939-1945--Underground movements--Russia (Federation)--Leningradskai︠a︡ oblastʹ--Sources.
Harvard subject headings:
Princeton subject headings:
Leningradskai︠a︡ oblastʹ (Russia)--History--Sources.
World War, 1939-1945--Russia (Federation)--Leningradskai︠a︡ oblastʹ--Sources.
World War, 1939-1945--Underground movements--Russia (Federation)--Leningradskai︠a︡ oblastʹ--Sources.