Columbia subject headings:
Harvard subject headings:
Katyn Massacre, Katynʹ, Russia, 1940.
Massacres--Soviet Union.
Prisoners of war--Poland
Prisoners of war--Soviet Union.
War crimes--Russia (Federation)--Katynʹ--History.
World War, 1939-1945--Atrocities--Soviet Union.
Princeton subject headings:
Katyn Massacre, Katynʹ, Russia, 1940.
World War, 1939-1945--Atrocities--Soviet Union.