I segreti della rupe di Orvieto
Subtitle: studi, ricerche e ipotesi sulla città sotterranea
By: Giancarlo Papini
Publisher: Quattroemme
Published: 1996
Place of publication: Ponte San Giovanni (Perugia)
Language: ita
Number of pages: 91
Subjects: Underground areas; Caves; Cisterns; Antiquities
Notes: Includes bibliographical references (p. 91).