File:Cetius Faventinus, Artis architectonicae privatis usibus adbreviatus liber – Fragment from Bern, Burgerbibliothek, Cod. 722.3.jpg

Summary
Fragment from Bern, Burgerbibliothek, Cod. 722.3, a 9th-century copy of Marcus Cetius Faventinus, Artis architectonicae privatis usibus adbreviatus liber, made at the abbey of Fulda.

Source: https://fragmentarium.ms/overview/F-lz0u