Columbia subject headings:
Bologna (Italy)--Buildings, structures, etc.--Conservation and restoration.
Hercules (Roman mythological character)--Art.
Lombardi, Alfonso. Hercules and the Hydra--Conservation and restoration.
Palazzo degli Anziani (Bologna, Italy)--Conservation and restoration.
Harvard subject headings:
Hercules (Roman mythological character)--Art.
Lombardi, Alfonso. Hercules and the Hydra.
Palazzo comunale (Bologna, Italy)
Sculpture--Italy--Bologna.
Terra-cotta sculpture, Renaissance--Italy--Bologna.
Princeton subject headings:
Hercules (Roman mythological character)--Art.
Lombardi, Alfonso. Hercules and the Hydra.
Palazzo comunale (Bologna, Italy)
Sculpture--Italy--Bologna.
Terra-cotta sculpture, Renaissance--Italy--Bologna.