Columbia subject headings:
Authors, Polish--19th century--Biography.
Niemcewicz, Julian Ursyn, 1758-1841.
Statesmen--Poland--Biography.
Harvard subject headings:
Authors, Polish--19th century--Biography.
Niemcewicz, Julian Ursyn, 1758-1841--Biography.
Statesmen--Poland--Biography.
Princeton subject headings: