Columbia subject headings:
Economic history--1918-
Reconstruction (1914-1939)
World politics.
Harvard subject headings:
Economic history
Economic history--1750-1918
Economic history--1918-1945
Reconstruction (1914-1939)
World politics
World politics--20th century
Princeton subject headings:
Economic history--1750-1918.
Economic history--1918-1945.
Economic history.
Reconstruction (1914-1939)
World politics--20th century.
World politics.