Columbia subject headings:
Harvard subject headings:
Polish people--Crimes against--Ukraine--Volhynia.
Ukraine--History--20th century
World War, 1939-1945--Atrocities--Ukraine--Volhynia.
Princeton subject headings:
Polish people--Crimes against--Ukraine--Volhynia.
Ukraine--History--20th century.
World War, 1939-1945--Atrocities--Ukraine--Volhynia.