Columbia subject headings:
Harvard subject headings:
Military history, Modern--20th century--Periodicals
World War, 1914-1918--Periodicals
World War, 1939-1945--Periodicals.
World politics--20th century--Periodicals
World politics--21st century--Periodicals
Princeton subject headings:
History, Modern--20th century--Periodicals.
Periodicals.
World War, 1914-1918--Periodicals.
World War, 1939-1945--Periodicals.