Folio 21v from the “De pratica seu arte tripudii” manuscript, Bibliothèque nationale de France, gallica.bnf.fr
guilielmus_hebraeus_pisauriensis_de_pratica_-_btv1b105278918_21v
Folio 21v from the “De pratica seu arte tripudii” manuscript, Bibliothèque nationale de France, gallica.bnf.fr