Columbia subject headings:
Europe--Politics and government--20th century--Bibliography.
Government executives--Europe--History--20th century--Bibliography.
Heads of state--Europe--History--20th century--Bibliography.
Political leadership--Europe--History--20th century--Bibliography.
Politicians--Europe--History--20th century--Bibliography.
Harvard subject headings:
Princeton subject headings:
Europe--Politics and government--20th century--Bibliography.
Heads of state--Europe--Bibliography.
Political leadership--Europe--Bibliography.
Politicians--Europe--Bibliography.