Columbia subject headings:
Harvard subject headings:
Katyn Massacre, Katynʹ, Russia, 1940.
Kozelʹsk (Russia : Concentration camp)
Prisoner-of-war camps--Russia (Federation)--Kozelʹsk.
Prisoners of war--Poland
World War, 1939-1945--Atrocities--Soviet Union.
World War, 1939-1945--Prisoners and prisons, Soviet.
Princeton subject headings:
Kozelʹsk (Russia : Concentration camp)
Prisoners of war--Poland.
World War, 1939-1945--Atrocities--Soviet Union.
World War, 1939-1945--Prisoners and prisons, Soviet.