Columbia subject headings:
Jews--Poland--Identity.
Jews--Poland--Warsaw--Biography.
Korczak, Janusz, 1878-1942.
Warsaw (Poland)--Biography.
Warsaw (Poland)--Ethnic relations.
Harvard subject headings:
Identity (Psychology)
Jewish nationalism
Korczak, Janusz, 1878-1942
Princeton subject headings:
Jews--Poland--Identity.
Jews--Poland--Warsaw--Biography.
Korczak, Janusz, 1878-1942.
Warsaw (Poland)--Biography.
Warsaw (Poland)--Ethnic relations.