Columbia subject headings:
Jews--Poland--Warsaw--Intellectual life.
Positivism.
Sokolow, Nahum, 1859-1936.
Warsaw (Poland)--Intellectual life--19th century.
Zionism--History.
Zionism--Poland.
Zionists--Biography.
Harvard subject headings:
Sokolow, Nahum, 1859-1936.
Zionism--History
Zionists--Biography
Princeton subject headings:
Sokolow, Nahum, 1859-1936.
Zionism--History.
Zionists--Biography.