Columbia subject headings:
Hartmann, Ludo Moritz, 1865-1924.
History.
Rome--Historiography.
Harvard subject headings:
Hartmann, Ludo Moritz, 1865-1924.
History.
Rome--Historiography
Princeton subject headings:
Hartmann, Ludo Moritz, 1865-1924.
History.
Rome--Historiography.