Columbia subject headings:
Europe--Politics and government--1789-1900.
Europe--Politics and government--20th century.
Historians--Biography.
Harvard subject headings:
Biographies
Europe--Politics and government--1789-1900
Europe--Politics and government--20th century
Historians--Biography
Princeton subject headings:
Europe--Politics and government--1789-1900.
Europe--Politics and government--20th century.
Historians--Biography.