Columbia subject headings:
Communication and traffic--Austria.
Communication and traffic--Hungary.
Railroads--Austria.
World War, 1914-1918--Transportation.
Harvard subject headings:
Communication and traffic--Austria.
Communication and traffic--Hungary.
Railroads--Austria
World War, 1914-1918--Transportation
Princeton subject headings:
Communication and traffic--Austria.
Communication and traffic--Hungary.
Railroads--Austria.
World War, 1914-1918--Transportation.