Columbia subject headings:
Harvard subject headings:
Holocaust, Jewish (1939-1945)--Poland
Holocaust, Jewish (1939-1945)--Poland--Warsaw
Jews--Poland--History--20th century.
Jews--Poland--Warsaw--History--20th century.
Princeton subject headings:
Holocaust, Jewish (1939-1945)--Poland--Warsaw.
Holocaust, Jewish (1939-1945)--Poland.
Jews--Poland--History--20th century.
Jews--Poland--Warsaw--History--20th century.