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