Columbia subject headings:
Francis (Mule)
Mules--War use--Fiction.
World War, 1939-1945--Fiction.
Harvard subject headings:
Mules--Fiction.
Mules--Humor.
World War, 1939-1945--Burma.
World War, 1939-1945--Campaigns--Burma.
World War, 1939-1945--Fiction.
Princeton subject headings: