Columbia subject headings:
Europe--Politics and government--1918-1945.
World War, 1914-1918--Belgium--Periodicals.
World War, 1914-1918--Periodicals.
Harvard subject headings:
Europe--Politics and government--1914-
Europe--Politics and government--1918-1945.
World War, 1914-1918--Belgium--Periodicals.
World War, 1914-1918--Periodicals
Princeton subject headings:
Europe--Politics and government--1918-1945--Periodicals.
Periodicals.
World War, 1914-1918--Periodicals.