Columbia subject headings:
Buildings, Medieval--Italy--Valle d'Aosta Region--Criticism and interpretation.
Buildings, Medieval--Italy--Valle d'Aosta Region--History.
Issogne Castle--Italy--Valle d'Aosta Region--Criticism and interpretation.
Issogne Castle--Italy--Valle d'Aosta Region--History.
Harvard subject headings:
Castello di Issogne (Issogne, Italy)
Challant family.
Issogne (Italy)--Buildings, structures, etc.
Princeton subject headings:
Castello di Issogne (Issogne, Italy)
Challant family.
Issogne (Italy)--Buildings, structures, etc.