Columbia subject headings:
Ancona (Italy)--History--Early works to 1800.
Frederick I, Holy Roman Emperor, approximately 1123-1190.
Lombardy (Italy)--History--To 1535--Early works to 1800.
Harvard subject headings:
Ancona (Italy)--History--Early works to 1800.
Frederick I, Holy Roman Emperor, approximately 1123-1190.
Lombardy (Italy)--History--To 1535--Early works to 1800.
Princeton subject headings:
Ancona (Italy)--History--Early works to 1800.
Frederick I, Holy Roman Emperor, approximately 1123-1190.
Lombardy (Italy)--History--To 1535--Early works to 1800.